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Latest Geochemistry Stories

2013-09-19 08:22:27

MARLBORO, New Jersey, September 19, 2013 /PRNewswire/ -- US Precious Metals, Inc. (OTCQB: USPR) in conjunction with its Joint Venture partners Mesa Acquisition Group LLC/Alba Petroleos De El Salvador Sem De C.V., is pleased to announce the successful completion of Phase 1 Satellite Imaging under the Joint Venture agreement. The imaging was carried out by Consorcio de Tecnologias Avanzadas de Columbia Ltda. and ENCO Petroleum Ltd, Bogota Columbia. The imaging technology...

2013-09-16 08:22:51

TORONTO, Sept. 16, 2013 /PRNewswire/ - Roxgold Inc. ("Roxgold" or "the Company") (TSXV: ROG) is pleased to announce the results of its Preliminary Economic Assessment ("PEA") prepared pursuant to National Instrument 43-101 ("NI 43-101") for the 55 Zone on its 100% owned Yaramoko exploration permit in Burkina Faso. Roxgold will be hosting a conference call and webcast presentation at 11:00 a.m. E.T. on September 16, 2013 to discuss these results.  Details are provided at the end...

Receding Ice Exposes Seawater To Carbon Dioxide, Driving Ocean Acidification In The Arctic Ocean
2013-09-13 12:12:21

University of South Florida (USF Health) Acidification of the Arctic Ocean is occurring faster than projected according to new findings published in the journal PLoS One. The increase in rate is being blamed on rapidly melting sea ice, a process that may have important consequences for health of the Arctic ecosystem. Ocean acidification is the process by which pH levels of seawater decrease due to greater amounts of carbon dioxide being absorbed by the oceans from the atmosphere....

Surface Mining Environmental Cost
2013-09-12 10:02:17

Brett Smith for redOrbit.com - Your Universe Online To satiate the United States’ fierce appetite for coal, miners often utilize a tactic called surface mining, which involves stripping away rock and topsoil to access the fossil fuel below. According to a new report from researchers from Duke University just published in the journal PLOS ONE, coal retrieved from the Earth through surface mining comes at a significant cost to the ecosystem. Study researcher Brian D. Lutz, currently...

2013-09-10 20:20:41

GOLDEN, Colo., Sept. 10, 2013 /PRNewswire/ -- Golden Minerals Company (NYSE MKT: AUMN; TSX: AUM) ("Golden Minerals" or "the Company"), a precious metals mining company with primary assets in Mexico and Argentina, reports continued progress with its work at the Velardena Operations in Durango State, Mexico. The Company previously announced it suspended operations at the Velardena mine on June 19, 2013 due to depressed silver and gold prices, and that the suspension was enacted to best...

2013-09-10 08:22:29

TORONTO, Sept. 10, 2013 /PRNewswire/ - Roxgold Inc. ("Roxgold" or "the Company") (TSXV: ROG) is pleased to announce that it has commenced a 1,600 metre diamond drilling program on the  Bagassi South target at its 100% owned Yaramoko permit located on the Houndé Greenstone Belt in Burkina Faso. This drilling will be conducted by Falcon Drilling Burkina Faso and will follow up on existing results announced by the Company on July 09, 2013. HIGHLIGHTS --...

2013-09-10 04:20:42

TORONTO, Sept. 10, 2013 /CNW/ - Alacer Gold Corp. ("Alacer" or the "Corporation") [TSX: ASR and ASX: AQG] announced today that the Board of Directors (the "Board") has appointed Richard P. Graff as interim Chairman of the Board.  Timothy J. Haddon and Rohan I. Williams have each resigned from the Board, effective immediately. As part of Alacer's new corporate strategy to focus on Turkey in the near-term and the surrounding region in the medium to long-term, the Board is seeking...

Dark Ocean Carbon Absorption Not Enough To Restrict Global Warming
2013-09-06 07:46:40

April Flowers for redOrbit.com - Your Universe Online A new study led by the University of Iowa shows that although microbes that live below 600 feet where light doesn’t penetrate – the so called “dark ocean”-- might not absorb enough carbon to curtail global warming, they do absorb considerable amounts of carbon, meriting further study. The findings of this study were published in the International Society of Microbial Ecology Journal. While many people are familiar with the...

2013-09-03 08:23:22

VANCOUVER, Sept. 3, 2013 /PRNewswire/ - Goldgroup Mining Inc. ("Goldgroup" or the "Company") (TSX:GGA, OTC:GGAZF, BMV SIX:GGAN.MX) is pleased to announce the closing of the acquisition (the "Transaction") of a 100% interest in the Cerro Prieto Project (the "Project") from Oroco Resource Corp. ("Oroco"), previously announced January 28, 2013. Due to the current market conditions and the deterioration of the gold price since January 2013, Goldgroup and Oroco have agreed to...

2013-09-03 08:23:17

HOUSTON, Sept. 3, 2013 /PRNewswire/ -- Gastar Exploration Ltd. (NYSE MKT: GST) ("Gastar") announced today that Gastar Exploration USA, Inc., the wholly-owned subsidiary of Gastar, has declared a monthly cash dividend on its 8.625% Series A Preferred Stock ("Series A Preferred Stock") for September 2013. The dividend on the Series A Preferred Stock is payable on September 30, 2013 to holders of record at the close of business on September 13, 2013. The September 2013 dividend...


Latest Geochemistry Reference Libraries

28_0d277ca2b0d8b8cd79fb9cfa322f77e1
2005-05-26 11:01:52

Diorite is a grey to dark grey intermediate intrusive igneous rock composed principally of plagioclase feldspar (typically andesine), hornblende, and/or pyroxene. Varieties deficient in hornblende and other dark minerals are called leucodiorite. It is often described as "salt and pepper" when composed largely of light-colored minerals randomly interspersed with dark minerals. When olivine and more iron-rich augite are present, the rock grades into ferrodiorite, which is transitional to...

28_30e95d7bc9a84ffe78f930c8704eb5b2
2005-05-26 11:00:22

Gabbro is a dark, coarse-grained, intrusive igneous rock chemically equivalent to basalt. It is a plutonic rock, formed when molten magma is trapped beneath the Earth's surface and cools slowly into a hard, coarsely crystalline mass. It is dense, greenish or dark-colored and contains varied percentages of plagioclase feldspar, pyroxene, amphibole, and olivine (called olivine gabbro when olivine is present in large quantities). Quartz gabbros are also known to occur and are probably derived...

28_c04342a5025a8ae7a0de88f6dc83278c
2005-05-25 11:55:01

Syenite is a coarse-grained intrusive igneous rock of the same general composition as granite but with the quartz either absent or present in relatively small amounts. The feldspars are alkaline in character and the dark mineral is usually hornblende. Soda-lime feldspars may be present in small quantities. The term syenite was originally applied to hornblende granite like that of Syene in Egypt, from which the name is derived. Syenite is not a common rock, some of the more important...

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