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Hydrokenopyrochlore

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SMM706864

Hydrokenopyrochlore

Rare mineral from Type Locality
New Mineral type

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Description
Locality: 
Antandrokomby Pegmatite, Manandona Valley, Ambositra, Amoron'i Mania, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 2 cm
Description

Beautiful, pale gray, prismatic sharp crystals of hydrokenopyrochlore and small very nice pink elbaite crystals. In the sample there are more, nice groups of twinned pale gray prismatic crystals of hydrokenopyrochlore in more areas of the matrix. The specimen comes from a small batch of few samples XRD analyzed. Very high quality sample for this rare specie! Hydrokenopyrochlore is a new member (IMA 2017-005) of Pyrochlore Group> Pyrochlore Supergroup, known only in the type locality: Antandrokomby, Madagascar.

Reference: ▪ Biagioni, C., Meisser, N., Nestola, F., Pasero, M., Bobyr, M., Roth, P., Schnyder, C., Gieré, R. (2018): Hydrokenopyrochlore, (□,#)2Nb2O6·H2O, a new species of the pyrochlore supergroup from the Sahatany Pegmatite Field, Antananarivo Province, Madagascar. ... 

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Mineral Data
What's on the rock

Hydrokenopyrochlore

Formula: 
2Nb2O4(OH)2(H2O)
Group Parent: 
Pyrochlore Group
Crystal System: 
Isometric
Type Locality: 
Antandrokomby, Manandona Valley, Sahatany, Antananarivo Province, Madagascar

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