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Mixed Minerals

Friday, 06 April 2018 08:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including anatase, anhydrite, azurite, carrollite, digenite, and dioptase and more from places like Dodo mine, Saranpaul, Prepolar Ural, Russia, Naica, Mun. de Saucillo, Chihuahua, Mexico, Metcalf mine, Greenlee Co., Arizona, United States, Mineral Hill Mine, Louisville, Carroll Co., Maryland, United States, Leonard mine, Butte dist., Silver Bow Co., Montana, United States, and Morenci mine, Greenlee Co., Arizona, United States.

Anatase

#RW48717
Locality
Dodo mine, Saranpaul, Prepolar Ural, Russia 
Formula
TiO2 
Availability
Available
Price
$125.00
Size
8 x 3.5 x 3.5 cm - Sm Cabinet 

Several blue, very nice Anatase crystals on this specimen of mica schist and Quartz. The largest crystal is 5mm but most are 1 to 2mm.  There are also yellowish amber blocky orthorhombic crystals to about 0.75mm closely associated with the Anatase. I am not sure what these are. They don't have the forms of garnet. Possibly Parisite. They almost look like Strontiojoaquinite, but I barium minerals have not been reported at this deposit, but of course it is possible. Ex. Fersman with label.


Anatase

Formula
TiO2 
Crystal System
Tetragonal 
Crystal Habit
Pyramidal, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Resinous 
Color
black, reddish brown, yellowish brown, dark blue, gray 
Streak
pale yellowish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Conchoidal 
Hardness
5.5-6 
Collection
Robert J. Waidler Collection
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Anhydrite

#48419
Locality
Naica, Mun. de Saucillo, Chihuahua, Mexico 
Formula
CaSO4 
Availability
Sold
Size
9 x 7 x 6 cm - Sm Cabinet 

Light blue bladed Anhydrite encrusted in colorless Dolomite. The Anhydrite blade is 7cm.


Anhydrite

Formula
CaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Massive - Fibrous, Plumose 
Cleavage
Perfect, Perfect, Good 
Luster
Vitreous - Pearly 
Color
colorless, white, bluish white, violet white, dark gray 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
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Azurite

with Malachite - #RW48692
Locality
Metcalf mine, Greenlee Co., Arizona, United States 
Formula
Cu3(CO3)2(OH)2 
Availability
Available
Price
$65.00
Size
7 x 6 x 2.5 cm - Sm Cabinet 
Tagged
carbonate , copper  

Deep blue bladed rosettes of Azurite to 2mm with light green fuzzy 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
Robert J. Waidler Collection
Mineralpedia
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Carrollite

#RW48653
Locality
Mineral Hill Mine, Louisville, Carroll Co., Maryland, United States 
Formula
Cu1+Co2S4 
Availability
Sold
Size
6 x 4.5 x 2 cm - Sm Cabinet 
Tagged
copper  
Special Info
Type Locality 

At least three crystal grains of Carrollite to 1.5mm in schist. This is the type locality! Originally a specimen of Allen V. Heyl of which the mineral Aheylite was named. It was collected by him in 1941 (see prov. tab).


Carrollite

Formula
Cu1+Co2S4 
Crystal System
Isometric 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
gray, gray, copper red, light gray, steel 
Class
Isometric - Hexoctahedral 
Fracture
Conchoidal 
Hardness
4.5-5.5 
Collection
Robert J. Waidler Collection
Special Info
Type Locality

Digenite

with Chalcopyrite - #RW48739
Locality
Leonard mine, Butte dist., Silver Bow Co., Montana, United States 
Formula
Cu1.8
Availability
Sold
Size
6 x 6 x 3.5 cm - Sm Cabinet 
Tagged
ore mineral , sulfide , copper  

Dark blue iridescent mass of crystalline Digenite with golden Chalcopyrite. A good ore specimen from a famous mining district.


Digenite

Formula
Cu1.8
Crystal System
Trigonal 
Crystal Habit
Pseudo Cubic 
Cleavage
Indistinct, None, None 
Luster
Sub Metallic 
Color
blue, dark blue, black 
Streak
grayish black 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
2.5-3 
Collection
Robert J. Waidler Collection
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Dioptase

#RW48650
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
CuSiO3·H2
Availability
Sold
Size
7 x 9 x 1.3 cm - Sm Cabinet 
Tagged
copper  

A thick aggregate of 1 to 2mm prismatic crystals of Dioptase. A locality specimen.


Dioptase

Formula
CuSiO3·H2
Crystal System
Trigonal 
Crystal Habit
Massive, Cryptocrystalline, Crystalline - Coarse 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
dark blue green, emerald green, turquoise 
Streak
green 
Class
Trigonal - Rhombohedral 
Fracture
Conchoidal 
Hardness
Collection
Robert J. Waidler Collection
Mineralpedia
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