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Rare Mineral Species

Friday, 09 August 2019 06:30 PM

Introducing the "Rare Mineral Species" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including autunite, and giniite and more from places like Saint-Symphorien, near Autun, Saône-et-Loire, Burgundy, France, and Sandamap pegmatite, D�ures, Erongo, Namibia.

Autunite

#51103
Locality
Saint-Symphorien, near Autun, Saône-et-Loire, Burgundy, France 
Formula
Ca(UO2)2(PO4)2·10-12H2
Availability
Available
Price
$350.00
Size
6 x 4.5 x 3 cm - Sm Cabinet 
Tagged
phosphate  

Bright, vivid yellow plates and rosttes of Autunite from type locality.


Autunite

Formula
Ca(UO2)2(PO4)2·10-12H2
Crystal System
Tetragonal 
Crystal Habit
Tabular, Micaceous, Foliated 
Cleavage
Perfect, Poor, Poor 
Luster
Vitreous - Pearly 
Color
yellow, pale yellow, lemon yellow, greenish yellow, pale green 
Streak
pale yellow 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Uneven 
Hardness
2-2.5 
Collection
Don Phillips Collection
Mineralpedia
View Autunite
On Dakota Matrix
Previously Sold Autunite
On Dakota Matrix
Other Available Autunite
WebMineral
View Autunite
Mindat
View Autunite

Giniite

#51096
Locality
Sandamap pegmatite, D�ures, Erongo, Namibia 
Formula
Fe2+Fe3+4(PO4)4(OH)2·2H2
Availability
Available
Price
$95.00
Size
Micromount 
Tagged
phosphate , pegmatite mineral  
Special Info
Type Locality 

A micromount with a 1cm specimen showing crystalline black grains of which is the Giniite. Very Rare


Giniite

Formula
Fe2+Fe3+4(PO4)4(OH)2·2H2
Crystal System
Monoclinic 
Crystal Habit
Crystalline - Fine 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
blackish brown, black, blackish green 
Streak
olive green 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
3-4 
Special Info
Type Locality
On Dakota Matrix
Previously Sold Giniite
On Dakota Matrix
Other Available Giniite
WebMineral
View Giniite
Mindat
View Giniite

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