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Mixed Minerals

Sunday, 05 January 2020 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including rammelsbergite, ruizite, silver, sklodowskite, and sphalerite and more from places like Great Slave Lake, Northwest Territories, Canada, Christmas mine, Gila Co., Arizona, United States, Guanajuato, Guanajuato, Mexico, Kongsberg, Buskerud, Norway, Mine No. 18, Paliokamariza mines, Laurium, Attica, Greece, and Shui You Shan, Hunan Province, China.

Rammelsbergite

#RW52054
Locality
Great Slave Lake, Northwest Territories, Canada 
Formula
NiAs2 
Availability
Sold
Size
10 x 9 x 5 cm - Cabinet 
Tagged
ore specimen , nickel  

Large, impressive ore specimen of nearly all Rammelsbergite, an ore of nickel


Rammelsbergite

Formula
NiAs2 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Radial, Massive - Granular 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
tin white, reddish white 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
5.5 
Collection
Robert J. Waidler Collection

Ruizite

with Kinoite - #52091
Locality
Christmas mine, Gila Co., Arizona, United States 
Formula
Ca2Mn3+2Si4O11(OH)4·2H2
Availability
Sold
Size
6 x 4.5 x 1 cm - Sm Cabinet 
Special Info
Type Locality 

Excellent rusty red groups of Ruizite to about 0.75mm across with good rich coverage and blue Kinoite. The Ruizite is nicely exposed and not covered by the colorless Apophylite.


Ruizite

Formula
Ca2Mn3+2Si4O11(OH)4·2H2
Crystal System
Monoclinic 
Crystal Habit
Euhedral Crystals, Prismatic, Radial 
Color
brown, orange 
Streak
apricot yellow 
Class
Monoclinic - Prismatic 
Hardness
Special Info
Type Locality
Mineralpedia
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On Dakota Matrix
Previously Sold Ruizite
On Dakota Matrix
Other Available Ruizite
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Mindat
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Silver

#AH52065
Locality
Guanajuato, Guanajuato, Mexico 
Formula
Ag 
Availability
Sold
Size
2.5 x 1.5 x 0.3 cm - Thumbnail 
Tagged
native element  

Wire Silver at it's best. Small TN size with a wire to over 2cm along the curled length.


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
Arnold G Hampson Collection
Mineralpedia
View Silver
On Dakota Matrix
Previously Sold Silver
On Dakota Matrix
Other Available Silver
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Mindat
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SOLD
Silver - AH52066
Silver - AH52066

Silver

#AH52066
Locality
Kongsberg, Buskerud, Norway 
Formula
Ag 
Availability
Sold
Size
4 x 2.5 x 1.5 cm - Miniature 
Tagged
native element  

Rich vein Silver in Calcite matrix.


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
Arnold G Hampson Collection
Mineralpedia
View Silver
On Dakota Matrix
Previously Sold Silver
On Dakota Matrix
Other Available Silver
WebMineral
View Silver
Mindat
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Sklodowskite

in Gypsum - #52086
Locality
Mine No. 18, Paliokamariza mines, Laurium, Attica, Greece 
Formula
Mg(UO2)2(SiO3OH)2·6H2
Availability
Available
Price
$75.00
Size
4 x 3.5 x 2.5 cm - Miniature 
Special Info
Fluorescent 

A nice yellow 3mm spray in Gypsum. Sklodowskite was the first uranium mineral to be found this locality and reported recently in 2017. It can be distinguished from other uranium minerals such as Uranophane and Boltwoodinte with UV. Much more information can be found on this find on Mindat in the article by Branko Rieck (click here).


Sklodowskite

Formula
Mg(UO2)2(SiO3OH)2·6H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
greenish yellow, light yellow 
Streak
yellow white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-3 
Special Info
Fluorescent

Sphalerite

with Calcite - #AH52069
Locality
Shui You Shan, Hunan Province, China 
Formula
ZnS 
Availability
Available
Price
$125.00
Size
16 x 10 x 6.5 cm - Cabinet 
Tagged
sulfide  

Large cabinet specimen of mostly discoidal Calcite crystals to 2cm. Some of the crystals are chipped, but not that bad. The main attraction are the hundreds of ruby red Sphalerite crystals to 3mm.


Sphalerite

Formula
ZnS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Colloform 
Cleavage
Perfect, Perfect, Perfect 
Luster
Resinous - Greasy 
Color
brown, yellow, red, green, black 
Streak
brownish white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection

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