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Barbosalite Rockbridgeite & Leucophosphite

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BCK808179

Barbosalite Rockbridgeite & Leucophosphite

Dan Behnke collection
Classic Locality

Description Tabs

Description
Locality: 
Tip Top Mine, Fourmile, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 1.9 cm
Description

You are bidding on a small sample with exceptional twinned crystals of barbosalite in pockets with sprays of rockbridgeite prisms, pink leucophosphite crystals and clusters of jahnsite group. This is a very rich sample of barbosalite from this mine and samples are quite rare. Two original slides scanned and shown here. 

This sample is from the collection of Dan Behnke, long-time friend, micromounter and prodigious photographer. I am pleased to be able to offer selections from his large collection, many of which are illustrated specimens in Rocks & Minerals, The Mineralogiocal Record, Photo Atlas of Minerals and many other publications. All samples from his meticulously catalogued collection will come with his original index card with all notes, photography annotations and other pertinent information, as well as any slides Dan may have taken of the sample with publication notes and date the photo was made.

Mineral Data
What's on the rock

Barbosalite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2
Strunz: 
8.BB.40
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil

Rockbridgeite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Type Locality: 
Midvale Mine, South Mountain, Midvale, Rockbridge Co., Virginia, USA

Leucophosphite

Formula: 
KFe3+2(PO4)2(OH)·2H2O
Strunz: 
8.DH.10
Hardness: 
3.5
Streak: 
White
Type Locality: 
Ninghanboun Hills serpentinite, Weelhamby Lake, Perenjori Shire, Western Australia, Australia

Seller Information

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