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Piemontite - Wikipedia
Piemontite is a sorosilicate mineral in the monoclinic crystal system with the chemical formula Ca 2 (Al,Mn 3+ ,Fe 3+ ) 3 (SiO 4 )(Si 2 O 7 )O(OH).
en.wikipedia.org
en.wikipedia.org
Piemontite: Mineral information, data and localities.
Piemontite was first described from the Prabornaz mine, Saint-Marcel, Aosta Valley (until 1946 Aosta Valley was a province of Piedmont), Italy in 1758.
www.mindat.org
www.mindat.org
PIEDMONTITE Definition & Meaning - Merriam-Webster
The meaning of PIEDMONTITE is a reddish brown or black mineral allied to epidote and containing manganese.
www.merriam-webster.com
www.merriam-webster.com
piedmontite
piedmontite Min. (ˈpiːdmɒntaɪt, ˈpjeːm-) [Alteration (by J. D. Dana) of G. piemontit: see piemontite.] = piemontite.1854 Dana Min. Index, Piedmontite. 1894 Min. Mag. X. 261 In the rhyolites the manganese-epidote, Piedmontite, is widely distributed. 1933 Mineral. Mag. XXIII. 417 The pleochroic colour...
Oxford English Dictionary
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PIEDMONTITE Definition & Meaning - Dictionary.com
a mineral, similar to epidote but containing manganese: found in schists and manganese ores. piedmontite. / -mən-, ˈpiːdmɒnˌtaɪt /. noun. a dark red mineral ...
www.dictionary.com
www.dictionary.com
Piemontite - Geology is the Way
Piemontite is the manganese-bearing variety of epidote and shows very distinctive deep red and violet colors and pleochroism.
geologyistheway.com
geologyistheway.com
piemontite
piemontite Min. (ˈpiːmɒntaɪt) [ad. G. piemontit (G. A. Kenngott Das Mohs'sche Mineralsystem (1853) 75), f. Piedmont (It. Piemonte, lit. Mountain-foot), its locality + -ite 2 b.] A brownish red or reddish black silicate of aluminium, iron, manganese, and calcium, resembling epidote; often called mang...
Oxford English Dictionary
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mindat.org - Piemontite
Piemontite is a rock forming mineral in the upper part of the metamorphic Glenwoody Formation of the Vadito Group. The textures throughout the Glenwoody ...
www.mindat.org
www.mindat.org
ALEX STREKEISEN-Piemontite-
Named in 1853 by Gustav Adolph Kenngott for the type locality, the Piemonte region of Italy. Piemontite probably forms complete solid solution with all ...
www.alexstrekeisen.it
www.alexstrekeisen.it
Piedmontite in Arizona | American Mineralogist - GeoScienceWorld
Piedmontite the rare manganese member of the epidote group was first described from Arizona by Dr. C. Lausen in 1927.1 This occurrence was ...
pubs.geoscienceworld.org
pubs.geoscienceworld.org
Piemontite - ClassicGems.net
Piemontite, also spelled Piedmontite, is a rare member of the Epidote Group of minerals that includes Allanite, Clinozoisite, Epidote, Piemontite, Tanzanite, ...
classicgems.net
classicgems.net
manganese
manganese (ˈmæŋgəniːz) Also 7 manganes, 9 manganeze. [a. F. manganèse (16th c.), a. It. manganese, one of the many corrupt forms of L. magnēsia: see magnesia 2. The word appears in Ger. as mangan (hence Du. mangaan, Sw. mangan). Cf. obs. F. mangane.] 1. A black mineral (now recognized as an oxide of...
Oxford English Dictionary
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