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Latest Petrology Stories

2010-04-08 09:58:00

Symbol: LCO.H - TSXV VANCOUVER, April 8 /PRNewswire-FirstCall/ - LAGASCO CORP.

56a7588b60d83175252c6cf4c20a07c11
2010-03-22 13:13:36

Study will help determine if sites linked to the massive orbs will be designated for preservation and promotion because of their 'outstanding value to humanity'.

2010-01-07 15:30:00

TSX-V: RES VANCOUVER, Jan. 7 /PRNewswire-FirstCall/ - Rare Element Resources Ltd (TSX-V: RES) is pleased to announce the acquisition of the Nuiklavik rare-earth-element (REE) prospect from Altius Resources Inc. ("Altius").

2009-12-15 08:00:00

NEW YORK, Dec. 15 /PRNewswire/ -- Agency Magma today announced it has launched Tuckerspointhotelandspa.com, an understated site created for Tucker's Point Hotel and Spa in Bermuda.

2009-11-16 08:05:00

Positive first quarter at Bokoni Growth projects on track to deliver 270,000 PGM (4E) ounces by 2014 VANCOUVER, Nov.

4aea61d1e8a29470bd5ea8bd0f1eac491
2009-09-14 11:05:00

Last month, officials with the Netherlands’ national museum reported that it had been holding a piece of petrified wood, which had been mistaken for a piece of rubble from the surface of the moon.

2009-07-10 06:30:00

TORONTO, July 10 /PRNewswire-FirstCall/ - Wallbridge Mining Company Limited (TSX: WM, FWB: WC7) announced today that a large Induced Polarization chargeability anomaly has been defined on its Rogers Creek porphyry copper-gold-molybdenum property in SW British Columbia.

6572c31b1cf2b248e53fcf888c153e101
2009-06-18 12:30:00

A top Australian expert warned that Indonesia's devastating 'mud volcano' could keep spewing for the next 30 years, filling the equivalent of 50 Olympic-size swimming pools every day.


Latest Petrology Reference Libraries

Chaitén
2014-08-28 10:38:21

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...

28_e9750264d5476c85f9be09d17bc6fd51
2005-05-26 12:03:39

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...

28_56635877b282726a86b25cf3e98722c2
2005-05-26 11:30:45

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...

28_42121cee4c09c0898f52263bea588d54
2005-05-26 11:26:59

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...

28_b760796d3dace508242e89fc53d49081
2005-05-26 11:13:08

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...

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Word of the Day
plim
  • To swell, as grain or wood with water.
The word 'plim' is probably a variant of the word 'plum'.
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