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Mining and Quarrying in Maine: Explore Maine Geology ...

Mining and Quarrying in Maine Virtual Tour. Our virtual tour is a series of photos which portray some of the history and types of Maine mining and quarrying.; Frequently Asked Questions Geologic Information. Metallic Mineral Deposits of Maine (map) Known occurrences of metallic minerals shown on a generalized geologic map of Maine.

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Maine Geological Survey: A Collector's Guide - Chapter 2

Chapter 2. Geologic Settings of Maine Minerals. Most of the good mineral localities in Maine occur in one of several common geologic environments, such as granite pegmatites or metamorphic rocks. Each of these settings is briefly described here, so that you will have a better understanding of how the mineral deposits originated.

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Map of Surficial Deposits and Materials in the Eastern …

deposits are overlain by unmapped glacial-lake clay and silt (unit lc). ... The clay minerals in most of the till in Iowa, South Dakota, North Dakota, and western and southwestern Minnesota are predominantly smectite (swelling clay). In some areas in Ohio, Pennsylvania, New York, New Jersey, and other

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Significant Known Metallic Mineral Deposits in Maine

Significant Known Metallic Mineral Deposits in Maine including approximate tonnage and grade1 Northern Maine belt (in alphabetical order) *Alder Pond - 3.4 MT massive sulfide, of which 0.8 MT grades 2-3% copper, 9-17% zinc, 0.5-1.0% lead, and 3-6 oz/ton silver. Advanced exploration permit issued by DEP to

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Maine Geological Survey: Maine's Mineral Resources

Maine Mineral Resources Data System - This database was produced by the Maine Geological Survey in 2009. It was derived from the U.S. Geological Survey's Mineral Resources Data System (MRDS). MRDS is a worldwide database of mineral site records with related geologic, commodity, and deposit information. The USGS data were combined with records ...

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Maine Geological Survey: Gold in Maine

Gold in Maine. Gold occurs in several geologic environments in Maine: in bedrock, in sediments that were eroded from bedrock by glaciers, and in stream deposits derived from either of these sources. Veins of gold in bedrock are …

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The Plumbago North pegmatite, Maine, USA: a new …

A new spodumene-rich pegmatite was recently discovered on the north side of Plumbago Mountain, Oxford County, Western Maine. The site is about 1.5 km northwest of the famous Dunton gem tourmaline pegmatite. It is an albite-quartz-spodumene pegmatite containing gigantic crystals of spodumene and montebrasite. Some spodumene crystals are more than …

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Mining In Maine - The Diggings™

Maine has 788 identified mines listed in The Diggings™. The most commonly listed primary commodities in Maine mines are Silver, Copper, and Lead .At the time these mines were surveyed, 174 mines in Maine were observed to have ore …

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Lithium Deposits in the United States - ScienceBase-Catalog

This data release provides the descriptions of approximately 20 U.S. sites that include mineral regions, mines, and mineral occurrences (deposits and prospects) that contain enrichments of lithium (Li). This release includes sites that have a contained resource and (or) past production of lithium metal greater than 15,000 metric tons. Sites in this database occur in …

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Massive Sulfide Deposits of the Bathurst Mining Camp, …

Massive Sulfide Deposit, Northern Maine: Cu-Zn-Au-Ag Cathy J. Busby, Klaus J. Schulz, ... mineral deposits, airborne geophysics, surficial and rock geochemistry, geochronology, derivative maps of mineral potential) of the Bathurst Mining Camp, and tables and appendices of data from papers in the volume. v.

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Maine Mineral Resources - Significant Metal Deposits

Maine Mineral Resources Data was produced by the Maine Geological Survey in 2009. It was derived from the U.S. Geological Survey's Mineral Resources Data System (MRDS). MRDS is a worldwide database of mineral site records with related geologic, commodity, and deposit information. The USGS data were combined with records from the Maine Geological Survey's

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Mount Mica, Maine Tourmaline, Gemstones, Jewelry - …

Mount Mica Today. In 2003, Mount Mica was purchased by Coromoto Minerals LLC. In August, mining began with the removal of overburden in the western portion of the mine. Immediately, pockets began to show and some beautiful …

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Interactive map of mineral resources in Maine | American ...

The Maine Geological Survey's interactive map provides a range of mineral resource information for the state of Maine. The map allows users to explore Maine's significant mineral commodities, mineral deposits, selected …

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Maine's Geology and

Resources: Geologists knowledgeable about Maine's mineral resources. Geologic maps and reports. Core facility – hundreds of core and logs from past exploration. Assistance: Guidance on land ownership. Listing of consulting geologists in Maine. Contact information for regulatory agencies. Maine Geological Survey

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Mineral Hill Deposit Near Parsonsfield, Maine | The …

Parsonsfield, Maine. 43.6749°N 71.0077°W. Overview Lead. Location 1 Aliquots. Physiography 1 Records. Mine Overview. The Mineral Hill Deposit is near Parsonsfield, Maine. The Mineral Hill Deposit was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small.

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Maine Pegmatite Mines and Prospects and Associated …

a preliminary guide-book which may aid mineral collectors and commercial mining organizations in appraising Maine'·s wealth in feldspar deposits and their associated industrial and exotic minerals. The pegmatites of Maine are essentially coarse-grained concentrations of feldspars and quartz

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Metallic Mineral Deposits in Maine - NRCM

Very large deposits of volcanic and sedimentary rocks (shown in yellow) are spread throughout the state. Volcanic and sedimentary deposits often hold massive sulfide deposits, which are what open pit mining companies will be looking for in Maine. These metallic mineral deposits are located near some of Maine's most precious natural areas,

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Maine Geological Survey: Metallic Mineral Deposits

The Metallic Mineral Deposits of Maine map (PDF 0.7MB) shows locations of known metallic mineral occurrences on a generalized geologic map of Maine. The information is taken from the Maine Mineral Resources database of …

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Rare Gems and Minerals in Maine - Mining Locations

New deposits can also be found by searching for pegmatite outcrops in the known mineral producing areas. Although mineral collecting is prohibited within Maine State Parks, many lands are open to casual prospecting for minerals.

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Citrine: Mineral information, data and localities.

Citrine is a variety of quartz which is usually quite harmless unless broken or powdered. Broken crystals and masses may have razor-sharp edges that can easily cut skin and flesh. Handle with care. Do not grind dry since long-term exposure to finely ground powder may lead to silicosis.

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Nickel Deposits of - USGS

Maine-----43 JGnox CountY ... which the hydrosilicate garnierite is the principal nickel mineral. These deposits contain more than 1.5 percent nickel. Large deposits of this type occur in New Caledonia and medium to large deposits occur in Indonesia, Venezuela, Brazil, Oregon (United States), and else­ ...

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Gold Prospecting in Maine | The Top Spots for Panning …

Gold was first discovered in Maine in the mid-1800s. But historically, prospectors frequently passed over the state and instead chose to do their prospecting in more fruitful regions of America. Now times have changed, as Maine's popularity for …

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Maine Geological Survey: Mining and Quarrying - …

Tourmaline is the official State Mineral of Maine, and the most valuable and highly sought-after gem material that can be found here. Gem tourmaline has been mined in Maine since the 1820's, and the oldest location (Mt. Mica in Paris Hill) is still producing today. Tourmaline is actually a group of minerals having various colors and compositions.

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Rare Gems and Minerals in Maine - Mining Locations

Maine is probably the best state in New England to mine for gems and minerals. The State Gem is tourmaline, which is found here in a variety of colors. Some exceptionally large specimens have been mined here. Other popular minerals to dig for …

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"Metallic Mineral Mining in Maine" by Kaitlyn Bernard

In 2012 the Maine State Legislature passed a bill directing the Maine Department of Environmental Protection (DEP) to rewrite the regulations governing metallic mineral mining in Maine. The bill was introduced after pressure from Maine's largest private land owner and timber company, J.D. Irving, Limited. The company has a lucrative mineral deposit on one of their …

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