PYROCHLORE DARK ORANGE CRYSTALS ON MATRIX Vishnevye Mts, RUSSIA
Item History & Price
| Reference Number: Avaluer:44323714 |
PYROCHLORE
* dark orange-brown crystals of pyrochlore on matrix *
* nice specimen from classic locality *
size: 80 X 63 X 29mm
weight: 177g
2E4
origin: Vishnevye Mountains, Chelyabinsk Oblast, RussiaPyrochlore is one of the tantalum/niobium oxides that are generally difficult to distinguish. Fortunately there are few of them that form exquisitely shaped octahedral crystals. P...yrochlore crystallizes in the isometric symmetry class and forms fine octahedral crystals that are typically and characteristically modified by other isometric forms. Other members of pyrochlore's namesake group the Pyrochlore Group also form octahedrons, but can sometimes be reliably differentiated by color, streak and other characteristics. Pyrochlore generally contains substantial amounts of radioactive elements called rare earths and this produces the radioactivity in this mineral. It is therefore a member of the informal group of minerals called the Rare Earth Oxides. These minerals are generally difficult to distinguish but the octahedral crystals of pyrochlore once again are usually sufficient indicators.
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