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Mixed Minerals

Sunday, 18 April 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including arsenopyrite, baryte, beryl, cerussite, and copper and more from places like Santa Barbara, near Parral, Chihuahua, Mexico, Dee North mine, Elko Co., Nevada, United States, Mianyang pref., Sichuan prov., China, Broken Hill, New South Wales, Australia, Pentire Glaze mine, St Minver, Cornwall, England, and Bisbee, Cochise Co., Arizona, United States.

Arsenopyrite

#WR55582
Locality
Santa Barbara, near Parral, Chihuahua, Mexico 
Formula
FeAsS 
Availability
Available
Price
$75.00
Size
9 x 7.5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Perfect and sharp silvery crystals of Arsenopyrite crystals to 7mm throughout matrix.


Arsenopyrite

Formula
FeAsS 
Crystal System
Monoclinic 
Crystal Habit
Striated, Euhedral Crystals, Prismatic 
Cleavage
one distinct 
Luster
Metallic 
Color
tin white, light steel gray 
Streak
black 
Geological Setting
Widespread. Most commonly found in medium to high temperature veins.  
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5.5 to 6 
Collection
Willard L. Roberts Collection

Baryte

#55595
Locality
Dee North mine, Elko Co., Nevada, United States 
Formula
BaSO4 
Availability
Sold
Size
11 x 7 x 5 cm - Cabinet 

Cabinet specimen with thick tabular crystals to 2.5cm. The crystals are a light golden brown color with very good luster.


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Mineralpedia
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Beryl

var. aquamarine - #55447
Locality
Mianyang pref., Sichuan prov., China 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
6.5 x 5 x 5 cm - Sm Cabinet 
Tagged
beryllium , pegmatite mineral  

Light blue, thick tabular crystals of Beryl, variety aquamarine to 4 x 1.5cm. Good clean showy specimen with sharp and lustrous crystals in parallel growth, unusual for Beryl.


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Mineralpedia
View Beryl
On Dakota Matrix
Previously Sold Beryl
On Dakota Matrix
Other Available Beryl
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Mindat
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Cerussite

#55450
Locality
Broken Hill, New South Wales, Australia 
Formula
PbCO3 
Availability
Available
Price
$125.00
Size
10 x 4 x 4.5 cm - Cabinet 
Tagged
carbonate  

White Cerussite crystals to 3cm with good showy character. The last photo shows good twinning. 


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Mineralpedia
View Cerussite
On Dakota Matrix
Previously Sold Cerussite
On Dakota Matrix
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Mindat
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Cerussite

#55578
Locality
Pentire Glaze mine, St Minver, Cornwall, England 
Formula
PbCO3 
Availability
Sold
Size
3.5 x 3.5 x 2 cm - Miniature 
Tagged
carbonate  

A good locality specimen of white "jackstraw" crystals to 6mm. Comes with a Richard Barstow label.


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Mineralpedia
View Cerussite
On Dakota Matrix
Previously Sold Cerussite
On Dakota Matrix
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Mindat
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Copper

#55597
Locality
Bisbee, Cochise Co., Arizona, United States 
Formula
Cu 
Availability
Available
Price
$425.00
Size
12 x 7 x 3 cm - Cabinet 
Tagged
native element  

Great old-timer here of a thick Copper plate with some crude faces developed along the edges. Excellent specimen from this world renowned and historic mine of the past. Comes with an older "Tucson Mineral & Gem World" tag.


Copper

Formula
Cu 
Crystal System
Isometric 
Crystal Habit
Nodular, Arborescent 
Cleavage
None, None, None 
Luster
Metallic 
Color
brown, copper red, light pink, red 
Streak
rose 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Mineralpedia
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Previously Sold Copper
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Mindat
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