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Hafnon & Oxystibiomicrolite

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SMM563940

Hafnon & Oxystibiomicrolite

Rare Mineral from Type Locality
Analysed

Description Tabs

Description
Locality: 
Muiâne Pegmatite, Alto Ligonha District, Zambezia Province, Mozambique
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.5 × 0.5 cm
Description

It is a rare and wonderful sample with two rare species. The hafnon is an extremely rare mineral species, in this sample, coming from the type locality and containing three hafnon crystals (!), there are also some beautiful sharp, yellow crystals, of oxystibiomicrolite ['Stibiomicrolite (of Groat et al.)'], some of which "overlook" other two hafnon crystals, as shown in the photos. An other one we can  instead observe and we can view the characteristic shape, it seems to be twinned. All rests on a fine pink-purple, hexagonal prism, formed by many tabular crystals of a "lithium mica"("lepidolite"), giving rise at a  really rare and beautiful micro sample.You may see the hafnon crystal, with its real color, in the first photograph.

Boxed with Label
Mineral Data
What's on the rock

Hafnon

Formula: 
HfSiO4
Strunz: 
9.AD.30
Crystal System: 
Tetragonal
Hardness: 
7.5
Type Locality: 
Morro Conco mine, Alto Ligonha District, Zambezia Province, Mozambique

Oxystibiomicrolite

Formula: 
(Sb3+,Ca)2Ta2O6O
Hardness: 
0.0
Type Locality: 
Varuträsk, Skellefteå, Västerbotten, Sweden
Analysis
Analysis Report - only: Hafnon & Oxystibiomicrolite

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