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Cahnite & Borcarite

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Cahnite & Borcarite

Rare Mineral

Description Tabs

Description
Locality: 
Huanggang Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.2 × 2 cm
Largest Crystal: 
1.50cm
Weight: 
4.00gr
Description

Excellent thumbnail of this rare material with large green clusters of borcarite blades hosting numerous grey, vitreous groups of cahnite tetrahedra. This material is best of for both species, and the exact location is still uncertain. Some say the material is from the nearby Shijiangshan Mine. Either way, this is rare material and very unusual!

Ex-personal collection, seldom seen in auction.

Mineral Data
What's on the rock

Cahnite

Formula: 
Ca2[B(OH)4](AsO4)
Strunz: 
6.AC.70
Hardness: 
3.0
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Borcarite

Formula: 
Ca4Mg(B4O6(OH)6)(CO3)2
Strunz: 
6.DA.40
Hardness: 
4.0
Type Locality: 
Snezhnoe B oreoccurrence, Izvestkovyi Stream, Titovskoe B deposit, Tas-Khayakhtakh Range, Dogdo River Basin, Polar Yakutia, Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

The item can be returned for whichever reason, provided its original conditions, and within 3 weeksfrom its delivery to the Buyer. In the case of returning, the Buyer will be entitled to the refund of the item price; shipping costs will remain at the Buyer's charge in any case.