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Rare Tsumeb Mineral Specimens IV

Friday, 29 June 2018 07:00 PM

Introducing the "Rare Tsumeb Mineral Specimens IV" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including mimetite, molybdofornacite, mottramite, otavite, and plancheite and more from places like Tsumeb mine, Tsumeb, Namibia.

Mimetite

with Cuprite - #PD49259
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
Pb5(AsO4)3Cl 
Availability
Sold
Size
7.5 x 4.5 x 4 cm - Sm Cabinet 
Tagged
arsenate  

Faint yellowish white acicular sprays of Mimetite to 5mm on Cuprite. Minor Wulfenite. Originally labelled as Leadhillite.


Mimetite

Formula
Pb5(AsO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Reniform, Globular, Prismatic 
Cleavage
Imperfect, None, None 
Luster
Adamantine - Resinous 
Color
white, yellow, orange, brown, red 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Don Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Mimetite
On Dakota Matrix
Other Available Mimetite
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Mindat
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Molybdofornacite

with Dioptase - #49205
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
CuPb2MoO4AsO4(OH) 
Availability
Sold
Size
3 x 3 x 2 cm - Thumbnail 
Tagged
arsenate , copper  

Lime green glassy crystals of Molybdofornacite crystals in groups to about 0.75mm scattered in spongy matrix with minor Dioptase. Excellent scope specimen and rare. The green of the Molybdofornacite is a little greener and brighter than the crystals in-hand due to the digital process. They are still, however, a very stunning green.

Ex. William Pinch collection


Molybdofornacite

Formula
CuPb2MoO4AsO4(OH) 
Crystal System
Monoclinic 
Crystal Habit
Pistolitic, Lath 
Cleavage
None, None, None 
Luster
Adamantine 
Color
light green 
Streak
yellow 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2-3 

Mottramite

on Dolomite - #48349
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
PbCuVO4(OH) 
Availability
Sold
Size
6 x 4.5 x 3.5 cm - Sm Cabinet 
Tagged
copper , vanadium  

Large milky white Calcite rhombs with preferential coatings of sparkly green tiny Mottramite crystals. Very attractive specimen. Mottramite was he first vanadate recognized at Tsumeb by Maucher in 1908.


Mottramite

Formula
PbCuVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Radial, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
brown, brown red, brownish black, green, dark green 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 

Otavite

on Cerussite with Rosasite - #48352
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
CdCO3 
Availability
Sold
Size
4 x 2 x 2 cm - Miniature 
Tagged
carbonate  
Special Info
Antique Specimen 
Special Info
Type Locality 

Ex. Maucher specimen with several areas of pearly white rhombic crystals of Otavite. with greenish Rosasite and minor Cerussite. Please see the Prov. tab for a scan of the Maucher label. It is also Ex. William Pinch.


Otavite

Formula
CdCO3 
Crystal System
Trigonal 
Crystal Habit
Encrustations, Euhedral Crystals 
Cleavage
Perfect, Perfect, Perfect 
Luster
Adamantine - Pearly 
Color
yellow brown, white, reddish, reddish white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Special Info
Antique Specimen
Special Info
Type Locality
Mineralpedia
View Otavite
On Dakota Matrix
Previously Sold Otavite
On Dakota Matrix
Other Available Otavite
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Mindat
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SOLD
Otavite - 49255
Otavite - 49255

Otavite

#49255
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
CdCO3 
Availability
Sold
Size
0.3 x 0.20 x 0.2 cm - Thumbnail 
Tagged
carbonate  
Special Info
Type Locality 
Special Info
Raman 

A small 3mm piece od pearly white Otavite. Verified. Capsule.


Otavite

Formula
CdCO3 
Crystal System
Trigonal 
Crystal Habit
Encrustations, Euhedral Crystals 
Cleavage
Perfect, Perfect, Perfect 
Luster
Adamantine - Pearly 
Color
yellow brown, white, reddish, reddish white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Special Info
Type Locality
Special Info
Raman
Mineralpedia
View Otavite
On Dakota Matrix
Previously Sold Otavite
On Dakota Matrix
Other Available Otavite
WebMineral
View Otavite
Mindat
View Otavite

Plancheite

#PD49277
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
Cu8(Si4O11)2(OH)4·H2
Availability
Sold
Size
5 x 3.5 x 2 cm - Miniature 
Tagged
copper  

Sky blue dull earthy Plancheite.


Plancheite

Formula
Cu8(Si4O11)2(OH)4·H2
Crystal System
Orthorhombic 
Crystal Habit
Fibrous, Radial, Acicular 
Luster
Adamantine - Silky 
Color
blue, greenish blue 
Streak
light blue 
Class
Orthorhombic - Dipyramidal 
Fracture
Unknown 
Hardness
5.5 
Collection
Don Phillips Collection

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