Latest Geochemistry Stories
VANCOUVER, July 29, 2014 /PRNewswire/ - Goldgroup Mining Inc.
TORONTO, July 29, 2014 /CNW/ - Alacer Gold Corp. ("Alacer" or the "Corporation") [TSX: ASR and ASX: AQG] announced today that it has filed its second quarter
VANCOUVER, July 17, 2014 /PRNewswire/ - Gold Reach Resources Ltd.
WASHINGTON, July 17, 2014 /PRNewswire-USNewswire/ -- NASA embarks this week on a coordinated ship and aircraft observation campaign off the Atlantic coast of the United States, an effort to
Trading Symbols: GTP - (TSX-V) P01 - (FRANKFURT) COLTF - (OTCQX) MONTREAL, July 7, 2014 /CNW Telbec/ -
VIRGINIA CITY, Nev., July 2, 2014 /PRNewswire/ -- Comstock Mining Inc.
Kimberlite intercepted to below 740 meters from surface Shares Issued and Outstanding: 115,144,550 TSX: MPV NYSE MKT: MDM TORONTO
TORONTO, June 11, 2014 /CNW/ - Anaconda Mining Inc.
Some 56 million years ago, a massive pulse of carbon dioxide into the atmosphere sent global temperatures soaring. In the oceans, carbonate sediments dissolved, some organisms went extinct and others evolved.
VANCOUVER, May 29, 2014 /CNW/ - NexGen Energy Ltd.
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...
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...
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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