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Last updated on April 18, 2014 at 21:21 EDT

Latest Economic geology Stories

2014-02-07 23:04:57

Gold Prospectors Association of America: The GPAA will hold its Gold and Treasure Expo in Fresno, Calif. at the Fresno Fair Grounds. Learn how to mine and pan for real gold from experienced gold prospectors. Fresno, California (PRWEB) February 07, 2014 The Gold Prospectors Association of America is headed to Fresno, Calif. for the Gold and Treasure Expo Feb. 22-23, 2014 in Fresno, Calif. at the Fresno Fair Grounds. Executive Director of Operations Dominic Ricci said the GPAA Gold and...

2014-02-07 16:23:05

ST. LOUIS, Feb. 7, 2014 /PRNewswire/ -- Patriot Coal Corporation today announced that it received three Mountaineer Guardian Safety Awards from the West Virginia Coal Association. The following operations received the award in their respective categories: -- Coal Clean preparation plant at the Panther mining complex; -- Fanco preparation plant and loadout at the Logan County mining complex; and -- Samples surface mine at the Paint Creek mining complex. Mountaineer...

2014-02-07 16:23:04

RICHMOND, Va., Feb. 7, 2014 /PRNewswire/ -- James River Coal Company (Nasdaq: JRCC) (the "Company"), today announced that it is exploring and evaluating potential strategic alternatives for the Company, which may include a capital investment through debt and/or equity securities or a sale of all or one or more portions of the Company. In connection with launching this process, the Company has entered into an amendment to its Revolving Credit Agreement (the "Amendment"), which will...

2014-02-07 08:21:49

VANCOUVER, Feb. 7, 2014 /PRNewswire/ - Bear Creek Mining (TSX Venture: BCM) ("Bear Creek" or the "Company") announces that it delivered to the Peruvian Minister of Economy and Finance, on February 6, 2014, a Notice of Intent to Submit a Claim to Arbitration ("Notice of Intent"), under the Free Trade Agreement between Canada and Peru ("Canada-Peru FTA"). The dispute arises out of the enactment by the Peruvian government on June 25, 2011, of Supreme Decree 032 rescinding the...

2014-02-06 20:20:53

Symbol: ASX: CHN TSX: CXN Shares outstanding: 298 million Fully diluted: 306 million PERTH, Western Australia, Feb. 7, 2014 /CNW/ - Chalice Gold Mines Limited (TSX: CXN) (ASX: CHN) ("Chalice") is pleased to advise that Meteoric Resources Limited (ASX: MEI) has recently announced positive exploration results at the Webb Diamond Project in Western Australia. Please refer to Meteoric Resources ASX announcement dated February 6, 2014 at www.asx.com.au (ASX code: MEI) titled...

2014-02-04 00:20:45

VANCOUVER, Feb. 3, 2014 /PRNewswire/ - Silver Standard Resources Inc. (NASDAQ: SSRI) (TSX: SSO) ("Silver Standard") announces today that it has entered into a Purchase and Sale Agreement (the "Agreement") with subsidiaries of Goldcorp Inc. (NYSE: GG) ("Goldcorp") and Barrick Gold Corporation (NYSE: ABX) to purchase 100% of the Marigold mine, a producing gold mine in Nevada, USA ("Marigold") for cash consideration of $275 million. Investment Highlights -- Provides...

2014-02-03 12:23:23

NYSE - AGTSX - FRFrankfurt - FMV VANCOUVER, Feb. 3, 2014 /PRNewswire/ - FIRST MAJESTIC SILVER CORP. (AG: NYSE; FR: TSX) (the "Company" or "First Majestic") is pleased to announce that its audited fourth quarter and 2013 year end financial results will be released on Wednesday, February 26, 2014, prior to market open. Furthermore, the Company will be holding a conference call and webcast on Wednesday, February 26, 2014 at 11 am PST (2 pm EST). To participate in the conference...

2014-02-03 12:22:46

WEST PERTH, Western Australia, Feb. 3, 2014 /CNW/ - HIGHLIGHTS -- Non-brokered private placements completed raising a total of $8.1 million; -- TSX listing achieved; -- Four new directors appointed and two directors retire; -- 1 for 6 consolidation completed; -- Strategic land holding acquisition completed, increasing land owned and leased by 163%; -- Engineering services contract...

2014-01-31 08:22:51

TORTOLA, BVI, Jan. 31, 2014 /CNW/ - Mangazeya Mining Ltd. (NEX:MGZ.H) ("Mangazeya" or the "Company") announces the completion of an updated NI 43-101 technical report titled "Mineral Resource and Reserve of the Savkino Gold Project, Chita Region, Russian Federation" (the "2014-Technical Report") dated January 31, 2014 for the Savkino Gold Mine in Siberia, Russia. The 2014-Technical Report was prepared by Micon International Co Limited ("Micon"). The 2014-Technical Report updates...

2014-01-31 08:22:33

Symbol: ASX: CHN TSX: CXN Shares outstanding: 251 million Fully diluted: 259 million PERTH, Western Australia, Jan. 31, 2014 /CNW/ - Chalice Gold Mines ("The Company") ASX:CHN TSX:CXN is pleased to announce that its Activity and Cash Flow Reports for the quarter ended December 31, 2013 have been issued today. The full texts of these reports are available at the Company's website www.chalicegold.com and under the Company's profile at www.sedar.com. Quarterly Highlights...


Latest Economic geology Reference Libraries

28_71c4ddf154b94f9ae30fda80d8080e32
2005-05-26 12:03:03

Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the cubic system. It has a brown to copper-red color on fresh surfaces that tarnishes to an iridescent purple surface. Its purple to bronze iridescence gives it the nickname peacock ore. Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with more common chalcopyrite. It also is found in pegmatites. It is important for its copper content of about 63 percent by mass...

28_2ed8636e187bcb1f5dad0d65027dc1b5
2005-05-26 11:58:03

Cassiterite is a tin oxide mineral, SnO2. It is generally opaque, but is translucent in thin crystals. Its luster and multiple crystal faces produce a desirable gem. Cassiterite is the chief ore of tin today. Most sources of cassiterite today are found in alluvial or placer deposits containing the resistant weathered grains. The best source of primary cassiterite is the tin mines of Bolivia, where it is found in hydrothermal veins. Cassiterite is a widespread minor constituent of igneous...

28_5f496c15049ba89cd8c43810810e311e
2005-05-26 11:32:33

Chalcocite, copper(I) sulfide (Cu2S), is an important copper mineral ore. It is opaque, being colored dark-gray to black with a metallic luster. It has a hardness of 2½ - 3. It is a sulfide with an orthorhombic crystal system. Chalcocite is sometimes found as a primary vein mineral in hydrothermal veins. However, most chalcocite occurs in the supergene enriched environment below the oxidation zone of copper deposits as a result of the leaching of copper from the oxidized minerals. It is...

28_30e4ecba792d2b734beb4d32901c1f58
2005-05-26 10:41:56

Hematite (AE) or haematite (BE) is the mineral form of Iron (III) oxide, (Fe2O3), one of several iron oxides. The ore sometimes contains slight amounts of titanium. When shaped into ornaments, it is often called black diamond. Hematite is a very common mineral, coloured black to steel or silver-gray, brown to reddish brown, or red. It is mined as the main ore of iron. Varieties include Bloodstone, Iron Rose, Kidney Ore, Martite, Paint Ore, Specularite (Specular Hematite), Rainbow Hematite...

28_0ac371f570a8e0129ff11833b1cf20c7
2005-05-26 09:20:28

Magnetite is a magnetic mineral form of both iron(II) oxide and iron(III) oxide or (iron(II,III) oxide), with chemical formula Fe3O4, one of several iron oxides and a member of the spinel group. Magnetite is the most magnetic of all the minerals on Earth, and these magnetic properties led to lodestone being used as an early form of magnetic compass. Small grains of magnetite occur in almost all igneous rocks and metamorphic rocks as well as many sedimentary rocks. Magnetite is a...

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