Latest Petrology Stories
A team of NASA-funded researchers has measured water from the moon that shows some parts of the lunar mantle have as much water as the Earthâ€™s upper mantle.
Carbon found within ancient rocks has played a crucial role developing a time line for the emergence of biological life on the planet billions of years ago.
VANCOUVER, May 13 /PRNewswire-FirstCall/ - Magma Energy Corp.
WASHINGTON, May 12, 2011 /PRNewswire-USNewswire/ -- New data analysis from NASA's Galileo spacecraft reveals a subsurface ocean of molten or partially molten magma beneath the surface of Jupiter's volcanic moon Io.
VANCOUVER, May 2 /PRNewswire/ - Magma Energy Corp. (TSX: MXY) today announced that its 2011 third quarter results will be released on Thursday, May 12th , 2011 after markets close.
VANCOUVER, April 28 /PRNewswire-FirstCall/ - Magma Energy Corp.
TSX-V: RES & AMEX: REE VANCOUVER, April 6 /PRNewswire/ - Rare Element Resources Ltd.
TEMPE, Ariz., Jan. 21, 2011 /PRNewswire/ -- Big Bear Mining Corp (OTC Bulletin Board: BGBR) ("The Company") ("BGBR"), a U.S.
Collaborating with an international research team, an economic geologist from The University of Western Ontario has discovered how gold-rich magma is produced, unveiling an all-important step in the formation of gold mines.
VANCOUVER, Dec. 7 /PRNewswire/ - Magma Energy Corp. (TSX:MXY) advises that Magma Energy Sweden A.B.
Chaitén is a volcanic caldera that is located in southern Chile that reaches an elevation of 3,681 feet. It is thought that this volcano once held a rhyolite obsidian lava dome that reached 3,156 in height, but this was destroyed after its most recent eruption in 2008. In the past, this volcano has released grey obsidian, which was used by pre-Columbian cultures to make many objects, some of which have been found 250 miles away from the volcano. Chaitén experienced the beginning of a new...
Biotite is a common phyllosilicate mineral that contains potassium, magnesium, iron and aluminium. It is sometimes called "iron mica" and is found in granitic rocks, gneisses, and schists. Like other mica minerals, biotite has a highly perfect basal cleavage, its flexible sheets easily flaking off. It has a hardness of 2.5 - 3, a specific gravity of 2.7 - 3.1, is colored greenish to brown or black, and can be transparent to opaque. Biotite is occasionally found in large sheets, especially in...
Chert is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. It varies greatly in color from white to black, but most often manifests as gray, brown, grayish brown and light green to rusty red; its color is an expression of trace elements present in the rock, and both red and green are most often related to traces of iron (in its oxidized and reduced forms respectively). It outcrops as nodules in limestone, chalk, and dolostone formations as a...
Chromite, iron magnesium chromium oxide: (Fe,Mg)Cr2O4, is an oxide mineral belonging to the spinel group. Magnesium is always present in variable amounts, also aluminium and iron substitute for chromium. Chromite is found in peridotite and other layered ultramafic intrusive rocks and also found in metamorphic rocks such as serpentinites. Ore deposites of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, serpentine, and corundum. Chromite is...
In geology, a conglomerate is a rock consisting of other stones that have been cemented together. Conglomerates are sedimentary rocks consisting of subangular clasts and are thus differentiated from breccias, which consist of angular clasts. Both conglomerates and breccias are characterized by clasts larger than sand (>2 mm). There are two varieties of conglomerate, defined by texture: paraconglomerates and orthoconglomerates. Paraconglomerates are one of two varieties of conglomerate...
- In medieval musical notation, a sign or neume denoting a shake or trill.