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Nontronite & Hyalite

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PLN101382

Nontronite & Hyalite

Description Tabs

Description
Locality: 
Strzegom, Strzegom-Sobótka Massif, Lower Silesian Voivodeship, Poland
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5.5 × 1.5 cm
Description

Green nontronite aggregates covered by opal - hyalite. Rare specimen from this locality !

Mineral Data
What's on the rock

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

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white
geo trader

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions
You can buy a lot specimens. I will give you a great combined shipping discount ! I combine the auctions. All packages are priority (7 days)