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Piemontite & Tinzenite

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ACM933425

Piemontite & Tinzenite

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Description
Locality: 
Gambatesa Mine, Reppia, Genova, Liguria, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 2 × 2.2 cm
Description

beauty quartz geode with crystal piemontite and tinzenite
ex Fabrizio Castellaro collection

Mineral Data
What's on the rock

Piemontite

Formula: 
{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05
Hardness: 
6.0 - 6.5
Streak: 
Reddish
Type Locality: 
Prabornaz Mine (Praborna Mine), Saint-Marcel, Aosta Valley, Italy

Tinzenite

Formula: 
(Ca,Mn2+)2Mn2+Al2BSi4O15(OH)
Strunz: 
9.BD.20
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
6.5 - 7.0
Type Locality: 
Parsettens Alp, Tinizong (Tinzen), Oberhalbstein (Surses; Sursass), Albula Valley, Grischun (Grisons; Graubünden), Switzerland

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions
Response time: the seller will reply to questions and purchase requests within 24 hours via the e-Rocks contact and invoice system. Contact me directly on [email protected] payments: if the mineral is shown different from the one presented, I assure the full refund of the purchase. the entire transaction must be the currency requested in the invoice I Paypal payments are welcomed. Do it to: [email protected]
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