Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Frondelite & Nontronite

Views:
Watches:
SYA784475

Frondelite & Nontronite

Ex Jürgen Kastning, Hamburg
Classic Locality

Description Tabs

Description
Locality: 
Hagendorf South Pegmatite, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2 cm
Description

Golden-brown radial frondelite crystals with dark green-black rockbridgeite and yellow nontronite.

Very good old-time specimen with also terminated frondelite crystals lining vugs.

Found in the 1970s - ex Jürgen Kastning, Hamburg

Mineral Data
What's on the rock

Frondelite

Formula: 
Mn2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Hardness: 
4.5
Type Locality: 
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil

Nontronite

Formula: 
Na0.3Fe2((Si,Al)4O10)(OH)2·nH2O
Strunz: 
9.EC.40
Hardness: 
1.5 - 2.0
Type Locality: 
Saint-Pardoux-la-Rivière, Dordogne, Aquitaine, France

Seller Information

Payment options: offline, paypal_wpp, paypal_wps