Ammin Geoscienceworld. McLean, Va 22102
Ammin Geoscienceworld. McLean, Va 22102
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Nevadaite (Cu2+,Al,V3+)6[Al8(PO4)8F8](OH)2·22H2O) is a category 1 and 2 rarity--formed from the scarce elements vanadium and copper under very restricted environmental conditions. The crystals are colorful but microscopic, and only known from two localities...
Nealite [Pb4Fe(AsO3)2Cl4·2H2O] From an ancient slag site in Greece, formed by slag meeting seawater. Credit RRUFF. For the first time more than 200 mineral species has been identified that originated either principally or exclusively due to human activities...
Photograph courtesy NASA/JPL/Stanford University This 4.5 billion-year-old rock, labeled meteorite ALH84001, is one of 10 rocks from Mars in which researchers have found organic carbon compounds that originated on Mars without involvement of life. Organic...
Quantitative determination of water in granites by infrared analysis New page 1) A. Volborth Dual grinding and x-ray analysis of all major oxides in rocks to obtain true composition. Applied Spectroscopy 19 (1965), 1. 2) M. Quatinetz, R.J. Schafer...
Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet’s deep carbon cycle, primarily due to oceanic...
SOCRATES is an international, refereed (peer-reviewed) and indexed scholarly hybrid open-access journal in Public Administration a...
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2 ) ranging from NNO−1.4 to +0.9, 1200 °C and 200 MPa. The resulting crystal- and bubble-free glasses were then isothermally (1200 °C) decompressed to final pressures P f ranging between 200 and 25 M...
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