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Latest Geochemistry Stories

2014-01-30 08:34:40

VANCOUVER, Jan. 30, 2014 /PRNewswire/ - Sarama Resources Ltd.

Ocean Acidification Long Term Research
2014-01-28 13:43:59

More long-term research is necessary for an accurate determination of how marine species will cope with increasing ocean acidification, according to new research.

2014-01-22 12:21:30

HOUSTON, Jan. 22, 2014 /PRNewswire/ -- Gastar Exploration, Inc.

2014-01-16 08:22:18

325,000 Ounces of Annual Gold Production at Low Costs during First Nine Years (All figures are in US dollars unless otherwise indicated) VANCOUVER, Jan.

2014-01-11 23:00:49

As global commodity prices moderate, funding for exploration activities is expected to contract.

2014-01-09 04:20:26

VANCOUVER, Jan. 9, 2014 /PRNewswire/ - Goldgroup Mining Inc.

2014-01-03 15:17:43

A new Duke University-led study has documented dramatic, natural short-term increases in the acidity of a North Carolina estuary.


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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Word of the Day
honeyguide
  • Any of various tropical Old World birds of the family Indicatoridae, some species of which lead people or animals to the nests of wild honeybees. The birds eat the wax and larvae that remain after the nest has been destroyed for its honey.
Honeyguide birds have even been known to eat candles.