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Mixed Minerals

Friday, 08 September 2017 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including acanthite, silver, smithsonite, and tantalite-(mn) and more from places like Rosario mine, Pachuca dist., Hidalgo, Mexico, Hope Bay Silver mine, Nunavut, Kitikmeot Region, Canada, Silverfields mine, Cobalt dist., Ontario, Canada, Berg Aukus, Grootfontein dist., Namibia, and Alto do Giz pegmatite, Rio Grande do Norte, Brazil.

Acanthite

with Silver - #RW47432
Locality
Rosario mine, Pachuca dist., Hidalgo, Mexico 
Formula
Ag2
Availability
Sold
Size
5 x 4.5 x 3 cm - Miniature 
Tagged
sulfide , silver  

A dull grey mass of mostly Acanthite and Silver and sliced on one time. Very rich specimen of "bonanza ore".  Ex. John Albenese.


Acanthite

Formula
Ag2
Crystal System
Monoclinic 
Crystal Habit
Blocky, Skeletal, Arborescent 
Cleavage
poor to none 
Luster
Metallic 
Color
lead gray, gray, iron black 
Streak
shining black 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2-2.5 
Mineralpedia
View Acanthite
On Dakota Matrix
Previously Sold Acanthite
On Dakota Matrix
Other Available Acanthite
WebMineral
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Mindat
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Silver

#RW47269
Locality
Hope Bay Silver mine, Nunavut, Kitikmeot Region, Canada 
Formula
Ag 
Availability
Available
Price
$250.00
Size
9 x 5.5 x 0.7 cm - Sm Cabinet 
Tagged
native element  

Slab mounted on styrofoam with original tag of Silver in brecciated mass.  Note unique locality of "Artic Circle", which is not quite accurate but close geographically.


Silver

Formula
Ag 
Crystal System
Isometric 
Crystal Habit
Arborescent, Dendritic, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
silver white, gray white, gray 
Streak
silver white 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Robert J. Waidler Collection
Mineralpedia
View Silver
On Dakota Matrix
Previously Sold Silver
On Dakota Matrix
Other Available Silver
WebMineral
View Silver
Mindat
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Silver

#RW47454
Locality
Silverfields mine, Cobalt dist., Ontario, Canada 
Formula
Ag 
Availability
Available
Price
$175.00
Size
11 x 8 x 0.7 cm - Cabinet 
Tagged
native silver  

A fabulous slab of Silver rimming goldish grey Safflorite in plumose growth in a carbonate mass. The piece shows ore mineralogy nicely.


Silver

Formula
Ag 
Crystal System
Isometric 
Crystal Habit
Arborescent, Dendritic, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
silver white, gray white, gray 
Streak
silver white 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Robert J. Waidler Collection
Mineralpedia
View Silver
On Dakota Matrix
Previously Sold Silver
On Dakota Matrix
Other Available Silver
WebMineral
View Silver
Mindat
View Silver

Smithsonite

#RW47469
Locality
Berg Aukus, Grootfontein dist., Namibia 
Formula
ZnCO3 
Availability
Available
Price
$225.00
Size
7 x 5 x 2 cm - Sm Cabinet 
Tagged
carbonate  

Deep yellowish brown, pronounced, rhombic crystals to 1.3cm. This is an excellent, clean, damage free, showy specimen with an old Prosper Williams label.


Smithsonite

Formula
ZnCO3 
Crystal System
Trigonal 
Crystal Habit
Botryoidal, Reniform, Earthy 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
grayish white, dark gray, green, blue, yellow 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle 
Hardness
4.5 
Collection
Robert J. Waidler Collection

Tantalite-(Mn)

#RW47427
Locality
Alto do Giz pegmatite, Rio Grande do Norte, Brazil 
Formula
Mn2+Ta2O6 
Availability
Available
Price
$175.00
Size
5 x 4.5 x 3 cm - Miniature 

A thick tabular, shiny, very nice crystal of Tantalite. The crystal tapers downward and has many slightly striated faces. 


Tantalite-(Mn)

Formula
Mn2+Ta2O6 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine, Massive - Granular, Disseminated 
Cleavage
Imperfect, None, None 
Luster
Sub Metallic 
Color
black, brown 
Streak
brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
6-6.5 
Collection
Robert J. Waidler Collection

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