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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.

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

Galena

with Sphalerite - #RW50128
Locality
Picher, Tri-State Dist., Oklahoma, United States 
Formula
PbS 
Availability
Available
Price
$65.00
Size
15 x 6 x 7 cm - Cabinet 
Tagged
ore mineral , sulfide  

Large cabinet specimen with good dull grey cubo-octahedral crystals to 1cm, but averaging about 6-7mm. It's a nice specimen of Galena in a large pocket in which all the crystals have been well preserved. There is also minor black to dark red Sphalerite.

Galena is the most common and widespread ore of Lead with 86.6% Pb. Lead is soft, heavy and malleable. Large quantities were mined from Mississippi Valley deposits, such as the Tri-State mines.  About 66% of lead is used lead-acid storage batteries. Lead and its compounds are cumulative poisons.


Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
Robert J. Waidler Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Galena
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Manganite

#RW50103
Locality
Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa 
Formula
Mn3+O(OH) 
Availability
Available
Price
$40.00
Size
5.5 x 5 x 3 cm - Sm Cabinet 
Tagged
ore mineral  

Shiny, lustrous black rounded crystal tips in a tighly packed cluster. On the side the crystals can be seen to extend through the entire specimen and down to the base. 

Manganite is an ore of Manganese containing 52.5% Mn. 


Manganite

Formula
Mn3+O(OH) 
Crystal System
Monoclinic 
Crystal Habit
Pseudo Orthorhombic, Massive - Fibrous, Prismatic 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
black, gray, grayish black 
Streak
dark brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
Collection
Robert J. Waidler Collection
Mineralpedia
View Manganite
On Dakota Matrix
Previously Sold Manganite
On Dakota Matrix
Other Available Manganite
WebMineral
View Manganite
Mindat
View Manganite

Sphalerite

with Quartz - #RW50124
Locality
Huaron mine, Huayllay, Pasco dept., Peru 
Formula
ZnS 
Availability
Available
Price
$40.00
Size
7 x 5 x 5 cm - Sm Cabinet 
Tagged
ore mineral , sulfide  

Black highly lustrous crystals od Sphalerite to over 1cm and associated with needle Quartz. Sphalerite is a primary ore of zinc, but sometimes will contain up to 26% iron and small amounts of Cadmium.


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
Robert J. Waidler Collection

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