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Magnesio-arfvedsonite & Ussingite

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CSW144074

Magnesio-arfvedsonite & Ussingite

Description Tabs

Description
Locality: 
Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.8 × 3.5 cm
Largest Crystal: 
1.40cm
Description

A nice specimen showing lots of jet black magnesia-arfvedsonite crystals in matrix with light purple ussingite.

Mineral Data
What's on the rock

Magnesio-arfvedsonite

Formula: 
{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Strunz: 
9.DE.25
Hardness: 
5.0 - 6.0
Type Locality: 
Hpakant-Tawmaw Jade Tract, Hpakant Township (Hpakan; Phakant; Phakan), Mohnyin District (Moe Hnyin District), Kachin State, Burma (Myanmar)

Ussingite

Formula: 
Na2AlSi3O8OH
Strunz: 
9.EH.20
Crystal System: 
Triclinic
Hardness: 
6.0 - 7.0
Streak: 
white
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

Seller Information

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Seller's terms and conditions

Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer.