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Fenaksite & Delhayelite

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Fenaksite & Delhayelite

ex Sandro Maggia collection
Rare Mineral

Description Tabs

Description
Locality: 
Rasvumchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
1.8 × 5 × 3.2 cm
Description

A rare silicate, fenaksite is exclusive of the great alkaline complexes of the Kola peninsula. We offer here a very rich specimen mostly made up of translucent, pink cleavages, intergrown with platy grey delhayelite and minor aegirine.

From the collection of the late Sandro Maggia, with original box and label.

Mineral Data
What's on the rock

Fenaksite

Formula: 
(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)
Strunz: 
9.DG.70
Hardness: 
5.0 - 5.5
Type Locality: 
Material'naya Adit, Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Delhayelite

Formula: 
(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3·18H2O
Strunz: 
9.EB.10
Crystal System: 
Orthorhombic
Hardness: 
0.0
Type Locality: 
Mt Shaheru, Mt Nyiragongo, Goma, Kivu, Democratic Republic of Congo (Zaïre)
Labels
Label Images - only: Fenaksite & Delhayelite

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: systematic@yourmineralcollection.com . 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: systematic@yourmineralcollection.com  - phone: +39.3381058295. Returned items should be sent to: Roberto Bracco, piazza Monticello 12/2, 17100 Savona, Italy
 

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