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Rare Minerals

Friday, 22 September 2017 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including antlerite, bassetite, cesarolite, haynesite, ilmenite, and isokite and more from places like Chuquicamata mine, El Loa Prov., Antofagasta, Chile, Pedro Alvaro mine, Salamanca, Spain, Sidi Amor ben Salem mine, Tajerouine, Al Kef, Tunisia, Repete mine, San Juan Co., Utah, United States, Stone Creek pegmatite, Ruby Range, Madison Co., Montana, United States, and Nkumbwa Hill Carbonatite, Isoka dist., Northern prov., Zambia.

Antlerite

#RW47531
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Cu2+3SO4(OH)4 
Availability
Sold
Size
8 x 4 x 1.5 cm - Sm Cabinet 
Tagged
copper  
Special Info
Antique Specimen 

A 6mm seam of Antlerite on matrix from the famous and prolific Chuquicamata mine, the largest Copper mine in the world. The specimen originated from a well known early to mid 1900's collection of Charles W. Velte , who was a Marine in WWII. Velte collected before and after the war.


Antlerite

Formula
Cu2+3SO4(OH)4 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Concretionary, Reniform 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
green, light green, emerald green, black, black green 
Streak
pale green 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
Collection
Robert J. Waidler Collection
Special Info
Antique Specimen
Mineralpedia
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On Dakota Matrix
Previously Sold Antlerite
On Dakota Matrix
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Mindat
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Bassetite

#BN47488
Locality
Pedro Alvaro mine, Salamanca, Spain 
Formula
Fe2+(UO2)2(PO4)2·8H2
Availability
Sold
Size
4 x 3 x 1.5 cm - Miniature 

Tiny yellow, square, platy crystals to 1mm.


Bassetite

Formula
Fe2+(UO2)2(PO4)2·8H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
bronze, brownish yellow, greenish brown, yellow, olive green 
Streak
greenish white 
Class
Monoclinic - Prismatic 
Hardness
2.5 
Collection
Dr. Buford L. Nichols Collection

Cesarolite

with Anglesite - #PD47485
Locality
Sidi Amor ben Salem mine, Tajerouine, Al Kef, Tunisia 
Formula
PbMn4+3O6(OH)2 
Availability
Sold
Size
3.5 x 3 x 2 cm - Miniature 

Dull black to grey Cesarolite in shell-like, concentric groups to 3mm with glassy faint blue Anglesite.


Cesarolite

Formula
PbMn4+3O6(OH)2 
Crystal System
Trigonal 
Crystal Habit
Friable, Botryoidal, Encrustations 
Luster
Sub Metallic 
Color
gray, steel gray 
Class
Trigonal 
Hardness
4.5 
Collection
Phillips Collection

Haynesite

#RW47500
Locality
Repete mine, San Juan Co., Utah, United States 
Formula
(UO2)3(Se4+O3)2(OH)2·5H2
Availability
Available
Price
$50.00
Size
6 x 4.5 x 1.5 cm - Sm Cabinet 
Tagged
selenium  
Special Info
Type Locality 

Yellow patches and acicular groups with good coverage. Comes with a signed label from discoverer Patrick Haynes.


Haynesite

Formula
(UO2)3(Se4+O3)2(OH)2·5H2
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Acicular, Rosette 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
brownish yellow, amber 
Streak
white 
Class
Orthorhombic 
Hardness
1.5-2 
Collection
Robert J. Waidler Collection
Special Info
Type Locality
Mineralpedia
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On Dakota Matrix
Previously Sold Haynesite
On Dakota Matrix
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WebMineral
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Mindat
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Ilmenite

#45887
Locality
Stone Creek pegmatite, Ruby Range, Madison Co., Montana, United States 
Formula
Fe2+Ti4+O3 
Availability
Sold
Size
9 x 8.5 x 4 cm - Sm Cabinet 

A large, very nice, plate of Ilmenite 7x5cm in Quartz vein.


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
Chris van Laer Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Ilmenite
On Dakota Matrix
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Mindat
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Isokite

#BN47489
Locality
Nkumbwa Hill Carbonatite, Isoka dist., Northern prov., Zambia 
Formula
CaMgPO4
Availability
Sold
Size
2.5 x 2 x 1.5 cm - Thumbnail 
Tagged
phosphate  
Special Info
Type Locality 

White crystalline areas.


Isokite

Formula
CaMgPO4
Crystal System
Monoclinic 
Crystal Habit
Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Silky - Pearly 
Color
colorless, gray pink, pink 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Dr. Buford L. Nichols Collection
Special Info
Type Locality
On Dakota Matrix
Previously Sold Isokite
On Dakota Matrix
Other Available Isokite
WebMineral
View Isokite
Mindat
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