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8 billion dollars’ worth. When it comes to equipment, gold prospecting requires a specific set of tools. Prospecting Channel provides quality prospecting, mining, and rock Download scientific diagram | A. Always be wary where you are walking when gold detecting in the bush, as there are lots of unexpected open mine shafts throughout the area. If anyone is looking for an emergency comm's device,take a look at the Spot Gen 3. Article by: Hobart M. A majority of delineated exploration targets are either linked to the plutonic body or its surrounding metamorphic rocks. If you ever like to pan for gold, a new tool might be able to help you out. Nov 1, 2016 · 02 Feb 2018 06:23 AM. Alluvial gold was the main source of gold found and tent cities were a feature of the landscape as miners tried their luck in the creeks surrounding Yackandandah. Make sure to clean out the sluice box regularly to maximize your recovery. More expert prospectors will be able to fill the pan to almost full, but doing so can cause some of the gold particles to fall off during the panning process. A. These maps provide detailed information about goldfields throughout the state and are a valuable resource for modern-day gold prospectors. Other essential equipment includes a good gold pan, a set of tweezers, a “snuffer” bottle, storage vials, picks, and scrapers 2. Black Hills Gold Mine. To this end, satellite multispectral sensors such as the Advanced Space borne Thermal Emission and Reflectance (ASTER) with six channels in the shortwave infrared and five channels in the thermal area is helpful in detecting alteration and mineralisation Oct 30, 2023 · Hello Dears, I hereby ask for your opinion regarding a request that I received from someone on the internet: He told me that he can sell me a map taken with Satellite which determines the places where there is gold and the veins of gold for $500. Gold prospecting involves the exploration and examination . It has a small, durable design and is lightweight, making it perfect for adventures where size and weight are a concern. Typical Shipping Times. When you first open the Oregon gold map you will get a satellite view of the state boundaries with little yellow/orange clusters throughout. 1080/19479832. Most of these liquids and gases follow cracks in the lava and deposit mineral matter along their way, forming a vein. Apr 19, 2021 · gold prospecting in the Astaneh granite intrusive, West Central Iran, International Journal of Image and Data Fusion, DOI: 10. GPS unit is only as good as the maps that it contains. By combining a sluice box with a powerful water pump, highbankers enable efficient processing of paydirt. Wind: SSW - 28 MPH. . Humidity: 15%. May 30, 2023 · The Little Mac footbridge is a suspension bridge that crosses the Manistee River on the North Country Trail. Download scientific diagram | Flowchart of the methodology applied in this study. Join • Renews at $120/year. Alluvial gold usually moves in a straight line. Gold prospecting clothes are designed to protect the prospector from the elements while also allowing for ease of movement and functionality. It's a historic pursuit. Since the discovery of gold in the early 1850s, the river has attracted countless prospectors, establishing several mining towns along its banks. Methods used vary with the type of deposit sought and the resources of the prospector. Relive Alaska's gold rush era and try your luck in panning for gold: Crow Creek Historic Gold Mine is one of the top spots to try it in Anchorage. High Plains Prospectors offers an extensive list of gold prospecting equipment. Although traditionally a commercial activity, in some developed countries placer gold prospecting has also become a popular outdoor recreation. a Satellite images represented by multispectral datasets of Jan 28, 2023 · Drones, also known as unmanned aerial vehicles (UAVs), are increasingly being used in various industries, including gold prospecting. Also available are gold pans in a variety of sizes and gold panning kits which include everything that you will need. Gold has been traced in its waters since the early settlers, making it a testament to Arkansas’s golden history. Here is a step-by-step guide on how to pan for gold with a good Gold Panning Kit: Gather Your Gold Prospecting Supplies Apr 26, 2023 · The Snake River in Idaho is another hot spot for gold prospecting across southern Idaho. Many people still come to Yackandandah to try their luck and pan for gold. Trommels for gold prospecting and mining come in a range of sizes and designs to suit Dec 13, 2010 · Google Earth is so new it that has not had much of a chance to be used as a prospecting tool, but it is just like flying around in an airplane only much less expensive. It is for gold prospectors with their own detectors. This river has consistent quantities of gold flakes, which appeal to amateur and experienced gold prospectors. Several regions in the High Arctic still lingered poorly explored for a variety of mineralization types because of harsh climate environments and remoteness. 1915395 To link to this article: https://doi. I personally own and use all the tools below. Thank you in advance for your support Nov 15, 2021 · The chemical significance of Fe in gold mineralization arises from its ability to react with sulphur in solution to deposit gold. This location is known for its gold deposits Welcome to ProspectingSupplies. Starred items are ongoing for the life of your membership. 5% of all active gold claims in the lower 48 states. Mar 29, 2023 · The Northern California Region. Prospecting from Orbit. Libertytown. The distribution of gold in the US is uneven. Jan 23, 2024 · Mastering the swirling and washing technique is essential for efficient gold panning. There are several places with important content of precious metals waiting for skill prospectors. Yes ! that Orara Gold fields is hard country alright. 32. Looking for gold is like your own personal treasure hunt. Click on any of the underlined links below to be taken to their webpage. May 5, 2023 · The Cortez Gold Mine is steeped in history from the 1800s. Areas adjoining to scrapes can be productive as well. It’s like stepping into a time machine and getting a front-row seat to Nevada’s rich mining past. On these images, zones of high iron alterations Mar 17, 2010 · Searching for gold in Google Earth. By following these tips, you can maximize your chances of success when using a highbanker for gold mining. Feb 29, 2016 · Prospecting and exploration that is a search for precious metals deposits is not a simple process because big deposits were discovered a long time ago. For history buffs, this is a must-visit spot. Great Falls Gold Mine. Those yellow (lode claims) and orange (placer claims) clusters represent very high concentrations of Mar 6, 2021 · In recent years, various geological activities and different mineral prospecting and exploration programs have been intensified along the Red Sea hills in order to elucidate the geological maps and to evaluate the mineral potentials. from publication: Fusion of ASTER satellite imagery, geochemical and geology data for gold prospecting in the Prospecting may be considered as the art and science of searching for minerals and rocks that are attractive, interesting or of economic value. When you’re at the Cortez Gold Mine, be prepared to find gold deposits in two types of ores – oxide and sulfide. Upgrade your gold prospecting game and elevate your results with the Vortex Dream Mat. Northern California is another great spot to find gold, specifically the Trinity Mountains. They claim land, promise it’s Step 2 – Placing the Material on the Pan. International: 7-14 business days. These reserves includ the Goldstream River, Kettle River, and Wildhorse River. Utah Gold Prospecting Club - West Valley, UT. This club focuses on using the Gold Cube, a specialized piece of equipment designed to make gold prospecting more accessible and more efficient. Arkansas River. In gold mining, trommels are used to sort and classify material, as well as wash the material through a sluice box to remove any impurities or unwanted debris. We serve as one of the largest dealers of prospecting equipment and supply in the country. Minelab PRO-GOLD Hex-Mesh Classifier Sifter. Sandy Creek: This lesser-known creek in Texas holds promise for gold prospectors. They are great places to try your hand at gold panning and prospecting. Jun 20, 2021 · 9 essential prospecting hand tools. Rock crushers for gold prospecting and mining are essential tools for anyone looking to extract gold from rocks or ore. Initial Payment. Many gold prospecting clothes also have California’s active gold claims represent about 5. Super Hog only ships in 6-8 business days. The large mining companies of the world are focused in big deposits and the small deposits <a title="Basic Gold Prospecting & Exploration Hose & Fittings. Gold Hog's high-tech gold prospecting equipment, devices, and tools have made it easy for modern-day prospectors to increase their chances of finding gold. Department of Interior database, Gold Maps Online has created a Aug 15, 2023 · During the 19th century gold rushes, prospectors relied on surface observations and rudimentary geological knowledge to identify potential gold-bearing areas. Traditional satellite monitoring is effective in tracking deforestation but is limited by cloud cover. It can be used on a PC, tablet or mobile phone. $389. When you first open the Utah gold map you will get a satellite view of the state boundaries with little yellow/orange clusters throughout. Compared to many other goldfields, the Castlemaine Jan 17, 2018 · What Is Gold. The Victorian Gold Maps can be viewed in either map view or satellite view using Google Maps. Geological Survey have embarked on an ambitious effort to create a worldwide map of well-exposed metal ore deposits. Jan 28, 2023 · Clean out the sluice box regularly: Over time, material can build up in the riffles and prevent the gold from settling properly. 95. BC offers 14 recreational panning reserves that are open to the public for recreational gold panning. The device uses the global Iridium network (with a satellite subscription) to send and receive text messages, track and share your Nov 13, 2023 · The Goldfields Guide website provides a comprehensive collection of historical gold maps for Western Australia, which can be accessed online for free. Feb 9, 2021 · A few of the creeks rivers around Castlemaine are off limits for prospecting, with the Loddon River, Coliban River, Campaspe River, and Jim Crow Creek all appearing on Earth Resources' list of rivers and streams where you can't prospect for gold. This study demonstrated a viable approach for future gold prospecting in the study area. After opening the New Mexico gold map you first see a satellite view of the state boundaries with yellow and orange clusters. This set also incorporates sifting pans with mesh sizes of 1/2 inch, 1/4 inch, and 1/12 inch, designed to conveniently stack on one another and fit atop a standard 5-gallon Ballarat, VIC 3350. Sep 12, 2023 · Ouachita River. Creeks and rivers where prospecting is allowed. No more guesswork or uncertainty; simply glance down and see your precious haul in plain sight. Placer deposits can be found along the creek, particularly in areas with bedrock outcroppings or gravel bars. Gold pans: Most people immediately think of the gold pan as the most important tool for gold prospecting. S. Satellite imagery and aerial photography have proven to be important tools in support of mineral exploration projects. Yackandandah is rich in gold mining history and owes its creation to the discovery of gold in 1852. New Mexico’s roughly 13,019 active gold claims represent about 2. 6% of all gold claims in the lower 48 states. Jan 28, 2023 · Highbankers, a crucial tool in the world of gold prospecting, have revolutionized the way prospectors extract gold. Its rich gold history dates back to the North Carolina gold rush in the early 1800s. Following the Klondike gold rush of 1897-98, tens of thousands of dreamers and schemers made their way to the Great Land, risking everything as they Gold Distribution in the USA. So once you find some, you can see where to find some more. I've recently developed a way to map out the GPAA claims in NW AZ. ID_CP. $14. Over the years, the river has produced significant amounts of gold, making it a popular destination for gold seekers. Gold Cube 3 Stack Deluxe with Junior Snuffer Bottle, 1-oz Glass Vial, Magnetic Separator, and Green Treasure Scoop. For example: AZ_AL. In perspective, any volume of water has a specific gravity of 1. The mill closed in 1877, and, like many other gold rush settlements, Rye Patch became a ghost town Gold prospecting is the act of searching in the wilderness for new gold deposits. Oct 11, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jan 28, 2023 · The Process of Panning for Gold. Victorian Online Gold Maps is an easy to use mapping package to help gold prospectors discover gold bearing ground in Victoria, Australia. The first two letters of the gold map file name indicate the state. Small flakes of placer gold can be found in the river’s sediment, making this area a popular spot for hobbyist gold prospectors. Get a Android tablet without a data planone that only uses WiFi. Catoctin Mountain Park. We offer a variety of gold sluices suited to any material you need to process. With Google Earth it is possible to see the lay Thuraya satellite is a fixed Sat (From memory over Singapore area) but as long as phone pointed N to NWN with clear line of sight reception all good. Apr 3, 2023 · Gold Cube Club. com, your one-stop platform for discovering an extensive selection of gold prospecting supplies from various trusted brands. prospecting and have just bought one. KMZ means this is the Idaho Closed Placer claim map. With help from the ASTER instrument aboard the NASA's Terra satellite, scientists at the U. A metal detector is just one of many tools used in the search for gold. In order to find the gold you are looking for, you I’ve taken nuggets as large as half an ounce out of other people’s scrapes. Cabin John Creek. This study is therefore aimed at testing the viability of using remote sensing and geographic information system (GIS) techniques for geological mapping and Fusion of ASTER satellite imagery, geochemical gold prospecting in the Astaneh granite intrusive, West Central Iran, International Journal of Image and Data Fusion, DOI: 10. As the lava cools, large amounts of gases and liquids are given off. Whether you're exploring a local park or venturing into the wilderness, this app provides you with an essential toolkit to enhance your treasure hunting and gold prospecting endeavors. Aug 27, 2023 · The best gold prospecting locations in Oklahoma are: Ouachita Mountains. Sep 29, 2012 · The most complete Vermont gold prospecting resource around!Sneak Preview, Gold Map Maker library for Google Earth!Want to find more gold?Interested in learni Apr 19, 2021 · Several high prospective zones are identified in the central and southeastern part of the study area. The Ouachita River, meandering through the Ouachita Mountains, is a gold panner’s paradise. $18. or g Geological mapping and gold prospecting in northern Sudan was conducted by Babiker et al. While this is often a commercial activity, completed by a team of prospectors with state-of-the-art machinery, it is also a popular hobby with amateurs. Most of the main gold-producing districts are in the mountainous areas of the United States, where folding, faulting, and igneous intrusions have deformed the rocks. Metal Products ship 3-6 business days. Not all of these are obvious, for example, some ancient dry creekbeds in my area appear as vague fingers spread across a plain but they were once rivers flowing into a delta. Domestic: 3-7 business days. Thuraya reception only problem spots can be lower Vic and Tas. Reno Prospecting & Detecting Club - Reno, NV. It involves using a gold pan and water to separate gold from dirt and gravel. Victorian Gold Maps with multiple feature layers including Shallow gold workings and mine layers. However, a brain is required to operate it, select the right location on the stream, get permission to enter the land and decide that the land has potential. Don`t know if it works `i` haven`t been game to try it. Using a U. You can mark where you find gold, to give you some insight into how it moves. Our store offers everything you need for a successful goldmining experience, including gold pans, gold mining equipment, gold prospecting equipment, sluice boxes, highbankers, and more. Experience the ultimate gold mining kit with a trio of substantial classifiers. When you first open the California gold map you will see a satellite view of the state boundaries with yellow and orange clusters throughout. . Salutations Fellow Prospectors Every Year in the field I get more and more concerned with the ageing population of our area of mutual interest. The Trinity Mountains are a hidden gem of the California Apr 18, 2023 · This is not a [Fake] metal detector or treasure Map. However, as the easily accessible gold deposits were exhausted, prospectors turned their attention to deeper, concealed deposits, necessitating more sophisticated exploration techniques. 2021. A vein (or gold vein) is created when lava makes its way to the surface. 21395 Southwest Murphy Lane, Beaverton, Oregon 97078, United States. In this study, Landsat-8, Advanced Spaceborne Thermal Emission and Gold prospecting is the act of searching for new gold deposits. PNWGP LLC. 9% of all active gold claims in the lower 48 states. Jun 27, 2024 · Paragraph 4: Your Gold Prospecting Companion The Gold Detector App is more than just an app; it's your loyal Gold Prospecting Companion. It's great for mapping,checking in to let people know you are ok and also works as an epirb. The Swan Falls Dam area is one of the best locations for gold panning along the Snake River. 3 times heavier than water, and around 6 to 8 times heavier than surrounding materials. In this complete guide, we’ll explore gold prospecting in Maryland and uncover the top locations for gold panning and sluicing while delving into the legal Indeed, its specific gravity is 19. They are particularly valuable for working away from the water source, where traditional panning might be ineffective . To effectively find gold while panning, start by filling your gold pan with material from the streambed or other potential gold-bearing locations. However, most prospectors will not engage in hard rock mining since it requires significant investment in specialized equipment. Jun 30, 2021 · This past month we launched our Radar Mining Monitoring Tool (RAMI), which is a new satellite monitoring tool that incorporates radar technology. The material you have collected should be enough to fill your pan – or at least three-quarters of it. The Gold Cube Club is another excellent option for gold enthusiasts in Colorado. PLB1 Rescue me on E-bay i think they work also on the land. Firstly, they provide geologists and field crews with the location of tracks, roads, fences, and inhabited areas. 000 i guess but not a lot of mobile reception in those gullies. Apr 27, 2023 · Throughout the 1860s and 1870s, the Rye Patch Mill mined more than $1 million in gold and silver. 21. The state is full of stories about gold rushes and historic mining villages, making it an attractive backdrop for those eager to locate the golden metal. They are versatile and efficient tools that can be equipped with a variety of sensors and cameras to help prospectors in their search for gold deposits. This may include rock-hounding, collecting fossils or mineral specimens of gem quality. It will have a satellite GPS built in or better yet. Those yellow (lode claims) and orange (placer claims) clusters represent high concentrations of active gold Uncover the world of gold prospecting with our comprehensive selection of supplies and equipment. Submerge the pan in the water and agitate it, allowing the water to separate the lighter materials from the heavier gold. Mar 19, 2022 · Share Multiple files May 2, 2024 · Sandy Creek. Items with a checkmark ship with your initial purchase. May 17, 2018 · Ryan will tell you there’s probably five million ounces of gold buried under those 964,000 acres—$6. Inglewood Motel and Caravan Park is a popular destination for In this one I show you the Best App for mapping and documenting your prospecting adventures. Today, the Rogue River remains a popular destination for gold prospectors, boasting several sites open to Oct 30, 2023 · For mines digging alluvial gold these overlays and geomaps can help you work out which river or creek systems feed into or out off them. Rogue River, situated in southwestern Oregon, has a rich history of gold mining. get a Garmin $100 GPS receiver (which also receives Glonass for better accuracy) and pair it with your tablet. Correct me if i`m wrong. NV Bureau of Mines & Geology - NV Mining & Geologic Information. Indeed, gold is about eight times heavier than the quartz rock. 94 mi View Details. 10% off. Oct 24, 2022 · Instead of finding gold dust, this method focuses on the actual gold-containing rock. We have over 50 different gold books and gold maps that show where gold has been found in the past and provide instruction on gold prospecting methods. Gold Panning & Mining. Method 1: Soaking and Agitating: Soak the material in a bucket of clean water and agitate it to loosen and remove mud and clay. Gold is a mineral that’s found in veins and placer deposits. org. Annual renewal will be one year from the purchase date. ) Location map showing the major gold districts (red boxes) in the Philippines (Mitchell and Leach, 1991). `i` was informed that mobile number 112 links to Satellite for emergencies. It’s not just a sluice mat; it’s a scientific breakthrough that empowers you to Gold Panning Kit. other forms of satellite imagery and aerial photographs have been used for years for a prospecting for valuable mineral deposits. Catering to both experienced gold miners and those new to the adventure, our goal is to connect you with the perfect tools and equipment to enhance your gold prospecting experience. Which is what prospectors do. The park is within walking distance to cafes, shops and hotel entertainment, and is surrounded by State Forests. Patuxent River. Nearest Prospecting Shop. The black box in the southeastern portion represents the Sep 5, 2018 · 05 Jun 2018 05:16 PM. Clothing made specifically for gold prospecting is typically lightweight, durable, and moisture-wicking to keep the prospector cool and dry while out in the field. While the app is running, a service logs your location. Without a well-prepared brain, the gold pan Utah’s active gold claims represent about 4. The tools are used in a variety of ways. 200 dollars for the device,200 dollars for the annual subscription I have been sending my own co Gold panning, tools, sluicing, where to look, how a gold hard rock deposit becomes a placer gold deposit, crevicing, testing, and much more! Extended DVD Version includes even more tips & techniques to help you get some color! Additional Shows Available on Programs Page. Monthly will begin one month from the purchase date. Whether you are an experienced gold miner or just starting out Rock Crushers. This is the app I use when I'm in the field working as a geologist and when I'm out prospecting Vortex Dream Mat doubles as an indicator mat, making it easy to spot your gold. I am currently in W. Feb 6, 2021 · Inglewood Motel and Caravan Park is a 10 acre bush park privately owned and managed by Jerry and Pauline Wellman in the gorgeous gold-rush town of Inglewood, Victoria. Mining and Satellite Imagery. [9] based largely on remote sensing. These machines are designed to break down large rocks and minerals into smaller, more manageable pieces that can be easily processed using other mining equipment, such as sluice boxes, gold pans, or shaker tables. 911. Those yellow (lode claims) and orange (placer claims) clusters represent high concentrations of active Jan 28, 2023 · Purpose: Washing removes mud, clay, and other fine particles that can cloud the water and make it more challenging to see the gold. On the left side of the next screen,copy the decimal coordinates. Panning for gold is one of the simplest and most popular methods of gold prospecting. In addition to gold sluices, we offer other gold prospecting We would like to show you a description here but the site won’t allow us. The idea here is to have a minimum number of tools that can do a maximum amount of work, while expending the least amount of energy possible. A trommel is a cylindrical drum that rotates and screens material as it moves through the machine. This is a listing of gold prospecting equipment hand tools for the most efficient removal of rock and ore samples. Unbox three gold pans in varying diameters (15-inch, 11-inch, and 9-inch). @article{Moradpour2021FusionOA, title={Fusion of ASTER satellite imagery, geochemical and geology data for gold prospecting in the Astaneh granite intrusive, West Central Iran}, author={Hooman Moradpour and Ghodratollah Rostami Paydar and Bakhtiar Feizizadeh and Thomas Blaschke and Amin Beiranvand Pour and Khalil Valizadeh Kamran and Aidy M Jan 13, 2024 · Techniques for Effective Panning. EASTERN OUTDOOR EXPEDITIONS 1760 FIRST STREET EXT NASHVILLE, NC 27856 (252) 908-0394 Distance: 50. For those that can meet the eligibility criteria the Federal Government has a scheme that funds just about 50% of the purchase price for a satellite Jul 9, 2023 · The Right Equipment for Gold Prospecting. We would like to show you a description here but the site won’t allow us. Starting with Google Earth and Goldmaps online ($20)and the Properties guide on the GPAA website, click on the claim you want to visit, and click on the Ingress listing. Thus, a well-prepared satellite derived alteration map of iron alteration (Figure 4 a and b) is highly relevant for identifying potential sites for gold deposits. The third letter indicates the status, open or closed (abandoned), and the fourth letter tells you if it’s a placer claim or a lode claim. 3. Wichita Mountains. The river’s gravel bars and banks are prime locations for gold panning. You can even get directions to the gold mine Aug 18, 2023 · The best gold prospecting locations in Maryland are: Potomac River. Drain the water and repeat until the water is clear. Check for old mining activity in the area, as this can indicate where gold deposits might be found. After mining underground, the ore is brought to the surface by tunnels or shafts in some gold mines. May 13, 2023 · Rogue River. (971) 264-4208 info@pnwgoldprospector. Tilt the pan forward at a slight angle and gently swirl it in a circular motion. The inReach Mini is a compact satellite communicator that allows for off-grid communication. Oregon’s roughly 6,817 active gold claims represent about 1. Jun 14, 2023 · The Second Broad River in Rutherford County is one of the favored sites for gold panning in North Carolina. Fusion of ASTER satellite imagery, geochemical and geology data for gold prospecting in the Astaneh granite intrusive, West Central Iran Hooman Moradpour, Ghodratollah Rostami Paydar, Bakhtiar Feizizadeh, Thomas Blaschke , Amin Beiranvand Pour, Khalil Valizadeh Kamran, Aidy M Muslim, Mohammad Shawkat Hossain Jan 28, 2023 · British Columbia is home to historic gold reserves. The club offers training sessions, demonstrations, and access to private claims. Prospecting is an activity that appeals to people of many different walks of life, who enjoy being in the outdoors Overview. King, PhD, RPG. Most gold deposits are in Alaska, California, Nevada, Colorado, and Arizona. Feb 5, 2021 · STAY SAFE WHILE GOLD PROSPECTING. The Trinity River and its tributaries are well-known for producing gold, and you can also find some great spots to pan for gold in the nearby streams and creeks. Past Hard Rock Mining Signs Pointing Toward Gold, Apr 13, 2014 · Hello folks. You will also encounter uneven ground, slippery clay in wet weather, and there is always the possibility of encountering snakes in summer. This motion helps separate the lighter material from the heavier gold particles, gradually revealing the gold at the bottom of the pan. Translated into simple terms, this means that gold is 19. The area around the bridge is well-known for its opportunities for gold panning. Sometimes old dozer scrapes that have become overgrown can be spotted on satellite photos using Google Earth more easily than they can be seen on the ground. Gold prospecting has been popular since antiquity. Inglefield Land is an ice-free region in northwest Greenland that contains copper-gold mineralization associated with hydrothermal alteration mineral assemblages. KMZ means this is the Arizona Active Lode claim map. This new tool will help us more effectively monitor and combat illegal gold mining in real-time, as radar allows […] Oct 1, 2010 · Remote sensing data can be utilised for regional mapping of the Earth's surface to enhance structural interpretation and mineral prospecting. kr ib bo sr mk ih rs vr gc yu