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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.

SOLD
Franklinite - BN50162
Franklinite - BN50162

Franklinite

#BN50162
Locality
Franklin, Sussex Co., New Jersey, United States 
Formula
ZnFe3+2O4 
Availability
Sold
Size
7 x 7 x 4 cm - Sm Cabinet 
Tagged
ore mineral  

Dark black chunk of Franklinite, the main ore of zinc at both Franklin and Sterling Hill orebodies. Franklinite contains 20.8% Zinc. 


Franklinite

Formula
ZnFe3+2O4 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive, Crystalline - Fine 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
black, brownish black 
Streak
reddish brown 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
5.5-6 
Collection
Dr. Buford Nichols Collection

Freibergite

#49110
Locality
Equity mine, Bulkley Valley of the Northern Interior , British Columbia, Canada 
Formula
Ag6Cu4Fe2Sb4S13 
Availability
Sold
Size
12 x 15 x 12 cm - Cabinet 
Tagged
ore mineral , sulfide , copper , silver  

Freibergite is the Ag-dominant analogue of Tetrahedrite. This is a very large and heavy specimen and may require additional postage. One side of the specimen is sawed and polished. The Freibergite can be seen on the polished end as nearly engulfing the entire host rock. Freibergite typically contains anywhere from 22 to 46% Copper and up to 17% Silver. 

There are some fantastic crystals to 0.75mm in one area.


Freibergite

Formula
Ag6Cu4Fe2Sb4S13 
Crystal System
Isometric 
Crystal Habit
Massive - Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
gray, steel gray, black 
Streak
reddish black 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 
Collection
Chris van Laer Collection

Galena

with Pyrite in Quartz - #49115
Locality
Alaska Juneau mine, Juneau dist., Juneau Borough, Alaska, United States 
Formula
PbS 
Availability
Sold
Size
16 x 10 x 8 cm - Cabinet 
Tagged
ore mineral , sulfide  

Large cabinet specimen with veins of Galena and Pyrite in Quartz.


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
Chris van Laer Collection
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Galena

with Sphalerite - #RW50128
Locality
Picher, Tri-State Dist., Oklahoma, United States 
Formula
PbS 
Availability
Sold
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
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
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Mindat
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SOLD
Ilmenite - RW50211
Ilmenite - RW50211

Ilmenite

#RW50211
Locality
Duluth Complex, Hibbing, St. Louis Co., Minnesota, United States 
Formula
Fe2+Ti4+O3 
Availability
Sold
Size
7 x 6 x 3.5 cm - Sm Cabinet 
Tagged
ore mineral  

Black massive chunk of Ilmenite, the primary ore of Titanium.


Ilmenite

Formula
Fe2+Ti4+O3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Massive - Lamellar 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
iron black, black 
Streak
brownish black 
Class
Trigonal - Rhombohedral 
Fracture
Conchoidal 
Hardness
5-5.5 
Collection
Robert J. Waidler Collection
Mineralpedia
View Ilmenite
On Dakota Matrix
Previously Sold Ilmenite
On Dakota Matrix
Other Available Ilmenite
WebMineral
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Mindat
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Manganite

#RW50103
Locality
Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa 
Formula
Mn3+O(OH) 
Availability
Sold
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

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