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Scheelite Wolframite Quartz & Zinnwaldite

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MNT692192

Scheelite Wolframite Quartz & Zinnwaldite

ex Rudolph Benno Wappler (Freiberg, GER)
Classic Locality

Description Tabs

Description
Locality: 
Zinnwald, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.3 × 2.2 cm
Description

This is a very nice old timer - not because of the specimen which is a quite mediocre paragenesis example with brownish scheelite on quartz with wolframite and mica but the beautiful hand written label. The writing suggests that the specimen was handled by Rudolph Benno Wappler who was director of the Freiberg Mining Academy from 1851-1888. The label is unusual in terms of obviously not being an "official" label of the academy which had the name of the institution printed on the labels. The scheelite exhibits blue to yellowish SW UV fluorescence, the latter probably caused by molybdenum contents.

 

Mineral Data
What's on the rock

Scheelite

Formula: 
Ca(WO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Bispbergs Klack, Säter, Dalarna, Sweden

Wolframite

Synonym Of: 

Hübnerite

Formula: 
MnWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5
Formula: 
(Fe2+)WO4 to (Mn2+)WO4
Crystal System: 
Monoclinic
Hardness: 
4 - 4.5
Colour: 
Greyish-black
Streak: 
Reddish Brown

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Seller Information

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Seller's terms and conditions

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