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Rare Minerals

Sunday, 09 January 2022 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including bellingerite, bermanite, beryl, bikitaite, botallackite, and brewsterite-sr and more from places like Chuquicamata mine, El Loa Prov., Antofagasta, Chile, Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo, Mt. Antero, Chaffee Co., Colorado, United States, Nolan property, Bikita Area, Masvingo, Zimbabwe, Geevor mine, Pendeen, St Just dist., Cornwall, England, and Middleshop, Strontian, Argyllshire, Scotland.

Bellingerite

#BW57290
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Cu3(IO3)6·2H2
Availability
Sold
Size
3.5 x 1.5 x 2 cm - Miniature 
Tagged
copper  
Special Info
Type & Only Locality 

Glassy green crystals to 3 to 4mm in aggregate to 9mm across. The larger crystal is striated. In association are possible thin plated crystals of Leightonite. Belligerite is a rare iodate of copper and found only at Chuquicamata. 


Bellingerite

Formula
Cu3(IO3)6·2H2
Crystal System
Triclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
light green 
Streak
light green 
Class
Triclinic - Pinacoidal 
Fracture
Conchoidal 
Hardness
Collection
Bill Wilson Collection
Special Info
Type & Only Locality

Bermanite

with Strengite - #BN55901
Locality
Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo 
Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Availability
Sold
Size
4 x 2 x 3 cm - Miniature 
Tagged
phosphate , pegmatite mineral  

Rusty red crystals of Bermanite lining a phosphate vug with purple Strengite.


Bermanite

Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Crystal System
Monoclinic 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
light red, dark reddish brown 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Bermanite
On Dakota Matrix
Previously Sold Bermanite
On Dakota Matrix
Other Available Bermanite
WebMineral
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Mindat
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Beryl

var. aquamarine - #AH57420
Locality
Mt. Antero, Chaffee Co., Colorado, United States 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
2.5 x 1.5 x 1.1 cm - Thumbnail 
Tagged
beryllium  

An excellent aquamarine Beryl crystal, terminated, with good color and a little Quartz by its side.


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Collection
Arnold G Hampson Collection
Mineralpedia
View Beryl
On Dakota Matrix
Previously Sold Beryl
On Dakota Matrix
Other Available Beryl
WebMineral
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Mindat
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Bikitaite

#BW57385
Locality
Nolan property, Bikita Area, Masvingo, Zimbabwe 
Formula
LiAlSi2O6·H2
Availability
Sold
Size
5 x 3 x 3 cm - Miniature 
Tagged
pegmatite mineral  

Bikitaite is a very rare lithium tectosilicate and falls within the zeolite group. It is found in only three localities worldwide. This is the type locality, as the name would suggest. The specimen is practically all Bikitaite which shows many good platy, striated crystals to 1.5cm.


Bikitaite

Formula
LiAlSi2O6·H2
Crystal System
Triclinic 
Crystal Habit
Aggregates 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Triclinic - Pedial 
Fracture
Conchoidal 
Hardness
Collection
Bill Wilson Collection
Mineralpedia
View Bikitaite
On Dakota Matrix
Previously Sold Bikitaite
On Dakota Matrix
Other Available Bikitaite
WebMineral
View Bikitaite
Mindat
View Bikitaite

Botallackite

with Chalcocite - #BW57402
Locality
Geevor mine, Pendeen, St Just dist., Cornwall, England 
Formula
Cu2Cl(OH)3 
Availability
Sold
Size
6.5 x 4.5 x 2 cm - Sm Cabinet 
Tagged
copper  

Bluish green micro crystals covering one side of matrix.


Botallackite

Formula
Cu2Cl(OH)3 
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Color
blue green, green, light blue green, light green 
Streak
light green 
Class
Monoclinic - Prismatic 
Hardness
Collection
Bill Wilson Collection

Brewsterite-Sr

#BW57401
Locality
Middleshop, Strontian, Argyllshire, Scotland 
Formula
Sr(Al2Si6)O16·5H2
Availability
Available
Price
$195.00
Size
8 x 4 x 2 cm - Sm Cabinet 
Special Info
Type Locality 

Exceptional specimen of Brewsterite with colorless, stubby, prismatic crystals to 2.5mm. Great coverage on front and back, loaded with crystals.


Brewsterite-Sr

Formula
Sr(Al2Si6)O16·5H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, gray. 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Bill Wilson Collection
Special Info
Type Locality

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