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Efremovite On Huizingite-(Al)

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Efremovite On Huizingite-(Al)

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Description Tabs

Description
Locality: 
Solfatara di Pozzuoli, Phlegrean Fields, Naples Province, Campania, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.3 × 3 × 2.2 cm
Largest Crystal: 
0.02cm
Description

A rich specimen of efremovite in well-formed cubic whitish microcrystals, from the only known natural (non-coal dump) occurrence at the Solfatara volcano.

The matrix was initially thought to be natroalunite but analysis showed it to be the second world find of huizingite-(Al), another very rare ammoniosulphate comprising most of matrix. Author's material, from a limited find.

Mineral Data
What's on the rock

Efremovite

Formula: 
(NH4)2Mg2(SO4)3
Strunz: 
7.AC.10
Crystal System: 
Isometric
Hardness: 
2.0
Type Locality: 
Coal mine No. 43, Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

We offer rare minerals to systematic collectors worldwide, doing our best to ensure accurate identification and provide adequate information and pictures.

Through extensive field search and contacts with trusted sources, we manage to provide the best in newly found species and classic type-locality minerals. Should your item prove to be different we offer an immediate refund of purchase.

Items may be returned within 15 days of receipt, please note that return costs are at customer's expense. We will issue refund as soon as we receive the item in unaltered condition.

Preferred payment is via Paypal, please follow instructions at ceckout and make payment to: [email protected] . If you don't have a Paypal account you can as well pay with your credit card following instructions for non-Paypal users.

Alternatively we accept bank transfer to: Roberto Bracco - bank: Intesa Sanpaolo - via Paleocapa 134/R - 17100 Savona, Italy.

IBAN code: IT79P0306910600100000067863 SWIFT code: BCITITMM

Cash and checks not accepted.

To contact us and ask questions about items on sale, please e-mail to: [email protected]  - phone: +39.3381058295. Returned items should be sent to: Roberto Bracco, piazza Monticello 12/2, 17100 Savona, Italy