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Kentbrooksite

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SKY632533

Kentbrooksite

Rare Mineral

Description Tabs

Description
Locality: 
Yubileinaya Pegmatite, Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.6 × 0.5 cm
Description

Sharp dark red-brown crystals of the rare Zr-Nb mineral kentbrookite from a Russian locality.

Element combination of kentbrooksite is unique among approved mineral species. (Lanthanides+ Zr+Nb)

Mineral Data
What's on the rock

Kentbrooksite

Formula: 
(Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2·2H2O
Strunz: 
9.CO.10
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0
Streak: 
White.
Type Locality: 
Kentbrooksite occurrence, Amdrup Firth, Kangerlussuaq Firth, Tunu Province (East Greenland), Greenland

Current price

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10
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Start 12 Jan 18:00
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Rest of World
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