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Ore Minerals 6

Friday, 25 January 2019 05:00 PM

A wide array of excellent, rich, and large ore minerals from classical mining districts the world over will be presented.

Breithauptite

#RW50110
Locality
Hi-Ho Silver mine, Cobalt dist., Ontario, Canada 
Formula
NiSb 
Availability
Sold
Size
11 x 10 x 3.5 cm - Cabinet 
Tagged
ore mineral , sulfide , nickel  

Heavy specimen and slabbed on one side. The Breithauptite occurs as arborescent or plumose growth habit in Calcite.


Breithauptite

Formula
NiSb 
Crystal System
Hexagonal 
Crystal Habit
Tabular, Massive, Reniform 
Cleavage
None, None, None 
Luster
Metallic 
Color
copper red, light brown red 
Streak
reddish brown 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Robert J. Waidler Collection

Breithauptite

#RW50120
Locality
Agaunico mine, Bucke Twp., Cobalt-Gowganda, Ontario, Canada 
Formula
NiSb 
Availability
Sold
Size
9 x 5 x 4.5 cm - Sm Cabinet 
Tagged
ore mineral , sulfide , nickel  

Breithauptite (NiSb) is an ore of Nickel and a member of the Nickeline group along with Nickeline (NiAs). Both of these minerals have a bronzy color and it is difficult to distinguish the two apart visually. Breithauptite is more of a copper-red color, but this may not be evident until you have both minerals side-by-side. Breithauptite (32% Ni) contains less nickel than Nickeline (43.9% Ni). This specimen contains roughly 75% Breithauptite and displays the beautiful metallic color and luster of this mineral.


Breithauptite

Formula
NiSb 
Crystal System
Hexagonal 
Crystal Habit
Tabular, Massive, Reniform 
Cleavage
None, None, None 
Luster
Metallic 
Color
copper red, light brown red 
Streak
reddish brown 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Robert J. Waidler Collection

Carrollite

in Calcite - #RW50112
Locality
Kamfundwa mine, Kambove dist., Katanga, Democratic Republic of Congo 
Formula
Cu1+Co2S4 
Availability
Available
Price
$55.00
Size
7.5 x 5 x 4 cm - Sm Cabinet 
Tagged
ore mineral , sulfide , copper  

Brilliant crystals of Carrollite. The largest crysatl is 8mm and the smaller is 3mm. Much of the Carrolitte occurs as vein fillings in Calcite.


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
SOLD
Cassiterite - 50106
Cassiterite - 50106

Cassiterite

#50106
Locality
Tin City, SE of Wales, Seward Peninsula, Alsaska 
Formula
SnO2 
Availability
Sold
Size
6 x 3.5 x 3 cm - Sm Cabinet 
Tagged
ore mineral , tin  

Cassiterite contains about 79 percent tin. It is usually found in high temperature hydrothermal veins. It is a common alluvial and eluvial mineral in some areas of granitic rocks. Native tin is a silvery white metal, softer than zinc and harder than lead. It is malleable and ductile at 100 degress C. Tin can be rolled into foil as thin as 0.0002 of an inch. Used mostly in "tinplate" for "tin cans, in bronze (about 9% tin) as in bronze wires, bearings, gears, screws, washers etc. 

This is a chunk of Cassiterite with rounded edges, implying it is was found in an alluvial deposit. The locality is a little known locality found in 1902.

 

 


Cassiterite

Formula
SnO2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Massive, Botryoidal 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
brown, brownish black, colorless, green, gray 
Streak
brownish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Irregular 
Hardness
6-7 
Collection
Chris van Laer Collection
SOLD
Chalcocite - RW50164
Chalcocite - RW50164

Chalcocite

#RW50164
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
Cu2
Availability
Sold
Size
13 x 12 x 7 cm - Cabinet 
Tagged
ore mineral , sulfide , copper  

This is a large heavy massive chunk of Chalcocite, an ore of Copper containing 79.9% Cu.  It is an excellent example of pure, bluish grey Chalcocite. It is sectile when scratched with a knife. HEAVY and may require extra shipping.


Chalcocite

Formula
Cu2
Crystal System
Monoclinic 
Crystal Habit
Massive, Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
blue black, gray, black, black gray, steel gray 
Streak
grayish black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5-3 
Collection
Robert J. Waidler Collection

Chalcopyrite

with Bornite - #RW50125
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
Cu1+Fe3+S2 
Availability
Sold
Size
10 x 9 x 7 cm - Cabinet 
Tagged
ore mineral , sulfide , copper  

Both Chalcopyrite ans Bornite are important ores of Copper and contains about 35 percent Copper. Chalcopyrite is the most widely occuring mineral of Copper. and is usually a primary mineral in porphyry deposits and is usually associated with Bornite, Chalcocite, Covellite, and Digenite.

This specimen is a good example of vein mineralization from a Copper porphyry deposit. There are two good "blowouts" of Chalcopyrite to 1.5cm and is sandwiched between layers of black, tarnished Bornite.


Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 
Collection
Robert J. Waidler Collection

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