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Mixed Minerals

Friday, 27 January 2017 08:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including baryte, celestine, colemanite, gillespite, and hydroxylherderite and more from places like Basin, Montana, United States, Maybee, Monroe Co., Michigan, United States, Sicily, Italy, Boron, Kern Co., California, United States, Gun Claims, MacMillian Pass, Itsy Mountains, Yukon Territory, Canada, and Pomaroli mine, Linopolis, Divino das Laranjereiras, Minas Gerais, Brazil.

Baryte

#46220
Locality
Basin, Montana, United States 
Formula
BaSO4 
Availability
Sold
Size
6 x 3 x 4 cm - Sm Cabinet 

Large deep golden yellow thick tabular crystals to 2cm with beveled edges. This is a good specimen for this deposit with nice display qualities.


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Collection
Chris van Laer Collection
Mineralpedia
View Baryte
On Dakota Matrix
Previously Sold Baryte
On Dakota Matrix
Other Available Baryte
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Celestine

with Calcite - #BN46184
Locality
Maybee, Monroe Co., Michigan, United States 
Formula
SrSO4 
Availability
Sold
Size
5 x 4 x 3.5 cm - Miniature 
Tagged
carbonate  

Light blue, lustrous, and well-formed Celestine crystals to 8mm with associated Calcite to 5mm. This is a nice combination specimen of two ordinary carbonate minerals.


Celestine

Formula
SrSO4 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Massive, Granular 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
blue, brown, colorless, green, gray 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Collection
Dr. Buford L. Nichols Collection
Mineralpedia
View Celestine
On Dakota Matrix
Previously Sold Celestine
On Dakota Matrix
Other Available Celestine
WebMineral
View Celestine
Mindat
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Celestine

with Sulphur - #BN46195
Locality
Sicily, Italy 
Formula
SrSO4 
Availability
Available
Price
$35.00
Size
7 x 7 x 5 cm - Sm Cabinet 

Celestine crystals to 1.1cm, averaging 7mm in a large cluster with associated sulfur to 5mm.


Celestine

Formula
SrSO4 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Massive, Granular 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
blue, brown, colorless, green, gray 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Collection
Dr. Buford L. Nichols Collection
Mineralpedia
View Celestine
On Dakota Matrix
Previously Sold Celestine
On Dakota Matrix
Other Available Celestine
WebMineral
View Celestine
Mindat
View Celestine

Colemanite

#BN46263
Locality
Boron, Kern Co., California, United States 
Formula
CaB3O4(OH)3·H2
Availability
Sold
Size
10 x 6 x 5 cm - Cabinet 

Outstanding, ponted and sharp Colemanite crystals to 1.5cm in a large group. Excellent specimen.


Colemanite

Formula
CaB3O4(OH)3·H2
Crystal System
Monoclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Massive - Granular 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, gray, gray white, yellowish white, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4.5 
Collection
Dr. Buford L. Nichols Collection

Gillespite

in Sanbornite - #BN46188
Locality
Gun Claims, MacMillian Pass, Itsy Mountains, Yukon Territory, Canada 
Formula
BaFe2+Si4O10 
Availability
Available
Price
$25.00
Size
7.5 x 4 x 2.5 cm - Sm Cabinet 

Red crystalline grains to 2mm. Gillespite is a barium iron phyllosilicate found in metamorphic rocks rich in barium. It is associated with another barium mineral, Sanbornite.


Gillespite

Formula
BaFe2+Si4O10 
Crystal System
Tetragonal 
Crystal Habit
Aggregates 
Cleavage
Good, Good, Poor 
Luster
Vitreous (Glassy) 
Color
red 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
Collection
Dr. Buford L. Nichols Collection

Hydroxylherderite

#BN46193
Locality
Pomaroli mine, Linopolis, Divino das Laranjereiras, Minas Gerais, Brazil 
Formula
CaBePO4(OH) 
Availability
Available
Price
$40.00
Size
7 x 6 x 2.5 cm - Sm Cabinet 
Tagged
phosphate , beryllium , pegmatite mineral  

 A large plate full of nothing but tan crystals to 4mm.


Hydroxylherderite

Formula
CaBePO4(OH) 
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, blue green, colorless, greenish white, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Sub Conchoidal 
Hardness
5-5.5 
Collection
Dr. Buford L. Nichols Collection

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