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Rhodochrosite : MnCO3, Kentrolite : Pb2Mn3+2(Si2O7)O2

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minID: JVT-NTC

Rhodochrosite : MnCO3, Kentrolite : Pb2Mn3+2(Si2O7)O2

Copyright © Fabre Minerals. All Rights Reserved
http://www.fabreminerals.com
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Novelties from the classic mine of Peyrebrune, well known its Fluorites. In November 2008, a small pocket found in the higher levels of the Rivet Quarry produced Rhodochrosite (analyzed), but more surprising is that the black material is another species, Kentrolite, a rare silicate of manganese and lead, never previously found on this site.
This sample is a good representation of this interesting find.
Rivet Quarry, Level 1, Peyrebrune, Réalmont, Tarn, France.
Found in 10/11/2008
Specimen size: 3.9 × 3.2 × 3.9 cm = 1.5” × 1.3” × 1.5”
Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”


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Photo added: 20th Apr 2009