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Hydrokenoralstonite Thomsenolite & Pachnolite

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MNT606729

Hydrokenoralstonite Thomsenolite & Pachnolite

ex Dr. F. Krantz, Bonn, GER
Type Locality

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Description Tabs

Description
Locality: 
Ivigtut, Ivittuut, Arsuk Fjord, Sermersooq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 6.1 × 7 cm
Description

Ivigtut classic and type locality specimen: a matrix of thomsenolite hosts elongated pachnolite crystals in vugs and also octahedral tan whiteish hydrokenoralstonite. Rare nowadays, old time material from Krantz.

Mineral Data
What's on the rock

Hydrokenoralstonite

Formula: 
NaMg[Al(F,OH)6]·H2O
Group Parent: 
Pyrochlore Supergroup
Strunz: 
3/C.03-60
Crystal System: 
Isometric
Hardness: 
4.5
Colour: 
Colourless, white
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Thomsenolite

Formula: 
NaCa[AlF6] · H2O
Strunz: 
3/C.02-20
Crystal System: 
Monoclinic
Hardness: 
2
Colour: 
Colourless, white, pale
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland
Dimorph Of: 

Pachnolite

Formula: 
NaCa[AlF6]·H2O
Strunz: 
3.CB.40
Hardness: 
3.0

Pachnolite

Formula: 
NaCa[AlF6]·H2O
Strunz: 
3.CB.40
Hardness: 
3.0
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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