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Recently Released New Additions

Rare & Systematic Minerals

Sunday, 07 May 2023 04:00 PM

Introducing the "Rare & Systematic Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including cabalzarite, graeserite, kobellite, magnesiohulsite, orientite, and schieffelinite and more from places like Falotta, Tinzen, Sursass, Graubünden, Switzerland, Gorb, Lärchultini, Binntal, Wallis, Switzerland, Superior Stone quarry, Wake Co., North Carolina, United States, Iten'yurginskoye dep., Chukotsky, Russia, Manganese mine, Copper Harbor, Keweenaw Co., Michigan, United States, and Grand Central mine, Tombstone, Cochise Co., Arizona, United States.

Cabalzarite - BAC61610
Cabalzarite - BAC61610

Cabalzarite

#BAC61610
Locality
Falotta, Tinzen, Sursass, Graubünden, Switzerland 
Formula
CaMg2(AsO4)2·2H2O 
Availability
Available
Price
$95.00
Size
1.3 x 0.9 x 0.8 cm - Thumbnail 
Special Info
Type Locality 

Salmon pink platy crystals in 1mm and less groups. Cabalzarite is a rare arsenate found in only three worldwide localities. On this specimen the crystals are on two sides.


Cabalzarite

Collection
William & Anne Cook Collection
Special Info
Type Locality
Mineralpedia
View Cabalzarite
On Dakota Matrix
Previously Sold Cabalzarite
On Dakota Matrix
Other Available Cabalzarite
WebMineral
View Cabalzarite
Mindat
View Cabalzarite
Graeserite - BAC61615
Graeserite - BAC61615

Graeserite

#BAC61615
Locality
Gorb, Lärchultini, Binntal, Wallis, Switzerland 
Formula
Fe4Ti3AsO13(OH) 
Availability
Available
Price
$75.00
Size
3 x 1.5 x 0.8 cm - Thumbnail 
Special Info
Type Locality 

Tiny 1mm and less acicular crystals throughout specimen. Graeserite is a rare titanium mineral with arsenic and found only in three places in the world.


Graeserite

Formula
Fe4Ti3AsO13(OH) 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Radial, Aggregates 
Cleavage
Distinct, None, None 
Luster
Metallic 
Color
black 
Streak
black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
5.5 
Collection
William & Anne Cook Collection
Special Info
Type Locality
On Dakota Matrix
Previously Sold Graeserite
On Dakota Matrix
Other Available Graeserite
WebMineral
View Graeserite
Mindat
View Graeserite
Kobellite - BAC61609
Kobellite - BAC61609

Kobellite

with Arsenopyrite - #BAC61609
Locality
Superior Stone quarry, Wake Co., North Carolina, United States 
Formula
Pb11(Cu,Fe)2(Bi,Sb)15S35 
Availability
Available
Price
$65.00
Size
3.5 x 2.5 x 2 cm - Miniature 
Tagged
sulfide , copper  

Imbedded silvery, striated crystal grains to 1cm with Arsenopyrite. The arrow points to a nice micro crystal of Arsenopyrite.


Kobellite

Formula
Pb11(Cu,Fe)2(Bi,Sb)15S35 
Crystal System
Orthorhombic 
Crystal Habit
Fibrous, Radial, Massive - Granular 
Cleavage
Distinct, None, None 
Luster
Metallic 
Color
lead gray, steel gray 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Hardness
2.5-3 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Kobellite
On Dakota Matrix
Other Available Kobellite
WebMineral
View Kobellite
Mindat
View Kobellite
Magnesiohulsite - BAC61613
Magnesiohulsite - BAC61613

Magnesiohulsite

#BAC61613
Locality
Iten'yurginskoye dep., Chukotsky, Russia 
Formula
Mg2(Fe3+,Sn,Mg)O2(BO3) 
Availability
Available
Price
$225.00
Size
1 x 0.5 x 0.5 cm - Thumbnail 
Tagged
tin  

Magnesiohulsite is a very rare tin borate found a three localites. The crystals are compact, radial fibers.


Magnesiohulsite

Formula
Mg2(Fe3+,Sn,Mg)O2(BO3) 
Crystal System
Monoclinic 
Crystal Habit
Aggregates, Microscopic Crystals, Acicular 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
black 
Streak
dark brown 
Class
Monoclinic - Prismatic 
Hardness
5.5-6.5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Magnesiohulsite
On Dakota Matrix
Other Available Magnesiohulsite
WebMineral
View Magnesiohulsite
Mindat
View Magnesiohulsite
Orientite - BAC61624
Orientite - BAC61624

Orientite

with Braunite - #BAC61624
Locality
Manganese mine, Copper Harbor, Keweenaw Co., Michigan, United States 
Formula
Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10·4H2O 
Availability
Available
Price
$95.00
Size
2 x 1.5 x 1.5 cm - Thumbnail 

Rusty red tiny tabular crystals. Rich and excellent specimen.


Orientite

Formula
Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10·4H2O 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Prismatic 
Cleavage
Indistinct, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
brown, black 
Streak
brown 
Class
Orthorhombic - Dipyramidal 
Hardness
4-5 
Collection
William & Anne Cook Collection
Mineralpedia
View Orientite
On Dakota Matrix
Previously Sold Orientite
On Dakota Matrix
Other Available Orientite
WebMineral
View Orientite
Mindat
View Orientite
Schieffelinite - BAC61626
Schieffelinite - BAC61626

Schieffelinite

#BAC61626
Locality
Grand Central mine, Tombstone, Cochise Co., Arizona, United States 
Formula
PbTeO4·H2O 
Availability
Available
Price
$150.00
Size
1.4 x 1.4 x 1 cm - Thumbnail 
Tagged
tellurium  
Special Info
Type Locality 

White Schieffelinite with green Rodalquilarite. Very rare.


Schieffelinite

Formula
PbTeO4·H2O 
Crystal System
Orthorhombic 
Crystal Habit
Platy, Scaly 
Cleavage
Good, None, None 
Luster
Adamantine 
Color
colorless, white 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Hardness
2 
Collection
William & Anne Cook Collection
Special Info
Type Locality
On Dakota Matrix
Previously Sold Schieffelinite
On Dakota Matrix
Other Available Schieffelinite
WebMineral
View Schieffelinite
Mindat
View Schieffelinite

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