Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Tinsleyite Laueite Bermanite & Robertsite

Views:
Watches:
BCK698510

Tinsleyite Laueite Bermanite & Robertsite

David Burgess Collection
Type Locality

Description Tabs

Description
Locality: 
Tip Top Mine, Fourmile, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.5 × 3.4 cm
Description

You are bidding on an exceptional and very rich sample from Tip Top with hundred of composite crystals of tinsleyite/leucophosphite with thousands of laueite crystals, red groups of bermanite plates, botryoidal growths of robertsite, sprays of rockbridgeite and other species. Extremely rich and aesthetic sample with so much to observe! Would make numerous high quality micro specimens. David Burgess collection. 

Mineral Data
What's on the rock

Tinsleyite

Formula: 
KAl2(PO4)2(OH)·2H2O
Strunz: 
8.DH.10
Hardness: 
5.0
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

Laueite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
3.0
Streak: 
White
Type Locality: 
Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany

Bermanite

Formula: 
Mn2+Mn3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.20
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
7U7 Ranch (7-U-7 Ranch), Bagdad Mine area, Hillside, Eureka District, Yavapai Co., Arizona, USA

Robertsite

Formula: 
Ca3Mn3+4(PO4)3O2·3H2O
Strunz: 
8.DH.30
Hardness: 
3.5
Streak: 
Red-brown
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

Seller Information

Payment options: offline, paypal_wpp, paypal_wps