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Eudialyte Aegirine Nepheline & Feldspar

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MNT205235

Eudialyte Aegirine Nepheline & Feldspar

ex Dr. H.J. Wilke (GER)
Classic Locality

Description Tabs

Description
Locality: 
Khibiny Massif, Murmansk Oblast, Russian Federation
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.6 × 7.6 × 4 cm
Description

Very interesting and representative example of this complex paragenesis out of pegmatitic areas in nepheline-syenitic rocks of the Khibiny complex: cherry red eudialyte is intergrown with dark aegirine, greenish-greyish feldspar and some tan-whiteish nepheline (which is known from there to give a nice LW-UV fluorescence, orange). Rare and quite attractive stuff!

Mineral Data
What's on the rock

Eudialyte

Formula: 
Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2
Strunz: 
9.CO.10
Hardness: 
5.0 - 6.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Feldspar

Group Parent: 
Feldspar Group

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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