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Lazulite : (Mg,Fe2+)Al2[OH|PO4]2, Quartz : SiO2, Muscovite : KAl2[(OH)2|AlSi3O10] |
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Freßnitzkogel Mt., Freßnitzgraben, Krieglach, Fischbacher Alpen Mts, Styria, Austria
Blue lazulite, partly with color zoning and broken, and up to 1 cm wide quartz-rich domains. Thin and wavy, muscovite-rich layers are crosscutting the sample from the left to the right. The central layer contains barely visible orange Th-rich crandallite-florencite-(Ce) crystals.
Polished slab, field of view 12 cm, sample FO002 (AN209). Collected ... |
| © Franz Bernhard | Photo ID: 27576 View Count: 427 |
Lazulite : (Mg,Fe2+)Al2[OH|PO4]2, Quartz : SiO2, Tourmaline : AD3G6(BO3)3[T6O18]Y3Z, Apatite, Muscovite : KAl2[(OH)2|AlSi3O10] |
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Freßnitzkogel Mt., Freßnitzgraben, Krieglach, Fischbacher Alpen Mts, Styria, Austria
Up to 1 cm large, blue lazulite-rich domains in quartz. On the right-hand side is black, fine grained tourmalinite. There are some aggregates of fine-grained muscovite + apatite und dark gray apatite grains between tourmalinite and lazulite. The genetic relationships between lazulite-quartz veins und tourmalinites are not clear, if there are any. ... |
| © Franz Bernhard | Photo ID: 27577 View Count: 340 |