Latest Geochemistry Stories
GOLDEN, Colo., Feb.
Director Dunham L. Craig Appointed Interim President TSX: SVL NYSE MKT: SVLC VANCOUVER, Feb. 26, 2015 /PRNewswire/ - SilverCrest Mines Inc.
TSX:ORV TORONTO, Feb. 24, 2015 /PRNewswire/ - Orvana Minerals Corp.
VANCOUVER, Feb. 18, 2015 /PRNewswire/ - Sierra Metals Inc.
TSX: SVL NYSE MKT: SVLC VANCOUVER, Feb. 16, 2015 /PRNewswire/ - SilverCrest Mines Inc.
Advancing Lincoln Hill, Nevada, toward feasibility Drill testing exploration targets on the prolific Cortez trend VANCOUVER, Feb.
-- Successful extraction and mill reconciliation of 17,540 tonnes at 9.01 g/t with 97.4% recovery rate for 4,948 ounces of gold produced TORONTO, Jan.
LAS VEGAS, Jan. 27, 2015 /PRNewswire/ --Calissio Resources Group Inc.
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...
- an ornament or knob in the shape of a flower
- In architecture, a floral ornament; specifically, the large conventional flower usually placed in the center of the abacus of a Corinthian capital or classic ceiling-caisson; also, the floreated termination of a Gothic finial.