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Willemite & Mimetite

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MNT16000

Willemite & Mimetite

Ex. H.-J. Wilke (GER)

Description Tabs

Description
Locality: 
Chah Milleh Mine, Anarak District, Nain County, Isfahan Province, Iran
Size Range: 
Small cabinet (7-10 cm)
Size: 
4.5 × 7.5 × 2 cm
Description

This is an interesting one: willemite (i XRD´d another one from this lot, so i am quite sure) pseudomorphs/perimorphs after ? At mindat.org there is an entry from John Betts that similar type of material is descloizite after cerussite, other sources indicate that there are willemite after cerussite pseudo’s.

So this is a kind of controversial specimen. There might be some other minerals present as mimetite (probable for the orange aggregates) & plattnerite a.s.o. but these weren’t tested.

Very interesting specimen and a hard to get one of course.

Mineral Data
What's on the rock

Willemite

Formula: 
Zn2SiO4
Strunz: 
9.AA.05
Hardness: 
5.5
Streak: 
White
Type Locality: 
Vieille Montagne (Altenberg; Kelmisberg), Moresnet, Kelmis, Plombières-Vieille Montagne District (Plombières-Altenberg), Verviers, Liège Province, Belgium

Mimetite

Formula: 
Pb5(AsO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany

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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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