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Todorokite In Opal

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AMM1025971

Todorokite In Opal

Classic Locality

Description Tabs

Description
Locality: 
Monti Pelati Nature Park, Bettolino, Torino Province, Piedmont, Italy
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.4 × 1 cm
Description

Pretty specimen of a faceted and high-quality cut opal of high transparency, into which black todorokite dendrites are grown. Visually very beautiful and from an old Italian deposit. From an old collection.

Mineral Data
What's on the rock

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Streak: 
White

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Accepted payment methods: PayPal, bank transfer.

Money back guarantee is valid until 14 days after receiving the payment. The refund will be initiated immediately upon receiving the minerals back. Due to the return time, there may be a delay in the refund.