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Mixed Minerals

Friday, 31 July 2020 08:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including almandine, annabergite, aragonite, azurite, calcite, and cerite-(ce) and more from places like Stikine River, Wrangell Island, Alaska, United States, Laurium, Attika, Greece, Mapimi dist., Durango, Mexico, Big Indian Copper mine, San Juan Co., Utah, United States, Santa Eulalia, Chihuahua, Mexico, and Bastnäs mines, Riddarhyttan, Västmanland, Sweden.

Almandine

#WR53803
Locality
Stikine River, Wrangell Island, Alaska, United States 
Formula
Fe2+3Al2(SiO4)3 
Availability
Sold
Size
9 x 7 x 4 cm - Sm Cabinet 

Large deep red, euhedral crystal to 2.5cm in schist.


Almandine

Formula
Fe2+3Al2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Equant crystals, rounded grains, typically well-formed dodecahedra or trapezohedra 
Cleavage
None 
Luster
Vitreous - Resinous 
Color
brown, brownish red, red, black, black red 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
7-8 
Collection
Willard L. Roberts Collection
Mineralpedia
View Almandine
On Dakota Matrix
Previously Sold Almandine
On Dakota Matrix
Other Available Almandine
WebMineral
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Mindat
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Annabergite

#WR53828
Locality
Laurium, Attika, Greece 
Formula
Ni3(AsO4)2·8H2
Availability
Available
Price
$125.00
Size
5 x 3.5 x 2 cm - Miniature 
Tagged
arsenate , nickel  

Bright green lath-like crystals to 1mm in a 2x1cm area. Two old labels: Willard Roberts and Georg Gebhard see prov. tab. Excellent specimen!


Annabergite

Formula
Ni3(AsO4)2·8H2
Crystal System
Monoclinic 
Crystal Habit
Earthy, Encrustations, Massive 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
apple green, greenish white, gray, yellow green, white 
Streak
light green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
Collection
Willard L. Roberts Collection

Aragonite

#AH53786
Locality
Mapimi dist., Durango, Mexico 
Formula
CaCO3 
Availability
Available
Price
$195.00
Size
22 x 12 x 13 cm - Cabinet 
Tagged
carbonate  

Large specimen of snow white cloud-like and plumose crystal formations of Aragonite. It is fascinating just to hold this in your hands and marvel over the formations.

Because of the size and weight of the specimen, an additional charge is calculated into the shipping cost. Exact costs will be determined at the post office and a refund or a request for more funds will be issued.


Aragonite

Formula
CaCO3 
Crystal System
Orthorhombic 
Crystal Habit
Pseudo Hexagonal, Columnar, Fibrous 
Cleavage
Distinct, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, gray, yellowish white, reddish white 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection
Mineralpedia
View Aragonite
On Dakota Matrix
Previously Sold Aragonite
On Dakota Matrix
Other Available Aragonite
WebMineral
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Mindat
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Azurite

with Malachite - #AH53831
Locality
Big Indian Copper mine, San Juan Co., Utah, United States 
Formula
Cu3(CO3)2(OH)2 
Availability
Sold
Size
10.5 x 8 x 4.5 cm - Cabinet 
Tagged
carbonate , copper  

Dark blue well-formed crystals of Azurite to from 1mm to over 1cm groups with fibrous Malachite.


Azurite

Formula
Cu3(CO3)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic, Stalactitic 
Cleavage
Perfect, Fair, None 
Luster
Vitreous (Glassy) 
Color
azure blue, blue, light blue, dark blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection
Mineralpedia
View Azurite
On Dakota Matrix
Previously Sold Azurite
On Dakota Matrix
Other Available Azurite
WebMineral
View Azurite
Mindat
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Calcite

with Marcasite - #AH53787
Locality
Santa Eulalia, Chihuahua, Mexico 
Formula
CaCO3 
Availability
Available
Price
$85.00
Size
12 x 10.5 x 8 cm - Cabinet 
Tagged
carbonate  

Great cabinet specimen with dogtooth Calcite crystals to 2cm. This is an excellent piece with superb, sharp crystals on botryoidal Marcasite.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
View Calcite
Mindat
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Cerite-(Ce)

#PD53749
Locality
Bastnäs mines, Riddarhyttan, Västmanland, Sweden 
Formula
(Ce,La,Ca)9(Mg,Fe3+)(SiO4)6(SiO3OH)(OH)3 
Availability
Sold
Size
4.5 x 3 x 4 cm - Miniature 
Tagged
REE mineral  
Special Info
Type Locality 

Granular pinkish Cerite with black granular masses of (?) It's heavy. Type Locality.


Cerite-(Ce)

Formula
(Ce,La,Ca)9(Mg,Fe3+)(SiO4)6(SiO3OH)(OH)3 
Crystal System
Trigonal 
Crystal Habit
Massive - Granular 
Cleavage
None, None, None 
Luster
Vitreous - Adamantine 
Color
brown, clove brown, cherry red, gray 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Uneven 
Hardness
5.5 
Collection
Don Phillips Collection
Special Info
Type Locality

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