Piemontite Thin Section

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Piemontite Epidote Quartz Messina Mine Musina Vhembe District Limpopo Province South Africa Pierre Precieuse Pierre

Piemontite Epidote Quartz Messina Mine Musina Vhembe District Limpopo Province South Africa Pierre Precieuse Pierre

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On the other hand petrologists define piemontite as a red epidote group mineral with strong violet red to yellow orange pleochroism in thin section.

Piemontite thin section. Piemontite is the manganese containing version of epidote and is noted for it s intense red colouration. Often found as anhedral grains or granular aggregates. Splintery thin elongated fractures produced by intersecting good cleavages or partings e g.

Piemontite ca2 al mn3 fe3 3 sio4 si2o7 o oh c 2001 mineral data publishing version 1 2 crystal data. Crystals are columnar prismatic bladed or acicular with the long dimension parallel to the b axis. As anhedral grains and grain aggregates.

In prismatic bladed or acicular crystals to 8 cm. Zoisite may form oriented intergrowths with epidote. 13 minerals in thin section university of north carolina 14 online mineral museum 15.

In ppl the pleochroism is between bright orange and magenta. In this plane polarized light video numerous piemontite crystals are shown in random orientations. This is a thin section microscope slide of piemontite from the type locality valle d aosta in northern italy.

It also contains braunite for which this is also the type locality. Piemontite is one of the best examples of pleochroism bec.

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