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Mixed Minerals

Friday, 09 December 2016 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including andradite, chalcocite, cuprosklodowskite, demesmaekerite, kingite, and microcline and more from places like Buckwheat pit, Franklin, Sussex Co., New Jersey, United States, Musonoi mine, Kolwezi, Shaba Cu belt, Democratic Republic of Congo, Tom's Phosphate quarry, Kapunda, South Australia, Australia, and Cathedral Rock, Ravalli Co., Montana, United States.

Andradite

#PD45477
Locality
Buckwheat pit, Franklin, Sussex Co., New Jersey, United States 
Formula
Ca3Fe3+2(SiO4)3 
Availability
Available
Price
$25.00
Size
3 x 2.5 x 3 cm - Thumbnail 

A fairly nice reddish brown crystal on a bit of matrix.


Andradite

Formula
Ca3Fe3+2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Euhedral Crystals, Massive 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
black, yellowish brown, red, greenish yellow, gray 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Conchoidal 
Hardness
6.5-7 
Collection
Phillips Collection
Mineralpedia
View Andradite
On Dakota Matrix
Previously Sold Andradite
On Dakota Matrix
Other Available Andradite
WebMineral
View Andradite
Mindat
View Andradite

Chalcocite

#PD45966
Locality
Franklin, Sussex Co., New Jersey, United States 
Formula
Cu2
Availability
Sold
Size
7.5 x 3.5 x 2.5 cm - Sm Cabinet 
Tagged
sulfide , copper  

A chunk of greyish Chalcocite with alterations to Malachite. Older label (see prov. tab).


Chalcocite

Formula
Cu2
Crystal System
Monoclinic 
Crystal Habit
Massive, Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
blue black, gray, black, black gray, steel gray 
Streak
grayish black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5-3 
Collection
Phillips Collection

Cuprosklodowskite

#DC45943
Locality
Musonoi mine, Kolwezi, Shaba Cu belt, Democratic Republic of Congo 
Formula
Cu(UO2)2(SiO3OH)2·6H2
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 
Tagged
copper  
Special Info
Radioactive!! 

Compact prismatic crystals in matrix, mostly in the tip as shown of about 1.5cm wide. Ex. William Pinch. Older labels (see prov. tab). Radioactive. 


Cuprosklodowskite

Formula
Cu(UO2)2(SiO3OH)2·6H2
Crystal System
Triclinic 
Crystal Habit
Acicular, Radial 
Cleavage
Good, None, None 
Luster
Vitreous - Silky 
Color
grass green, green yellow, light green 
Streak
greenish yellow 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
Collection
Cooke Collection
Special Info
Radioactive!!

Demesmaekerite

with Guilleminite & Marthozite - #DC45944
Locality
Musonoi mine, Kolwezi, Shaba Cu belt, Democratic Republic of Congo 
Formula
Pb2Cu5(UO2)2(Se4+O3)6(OH)6·2H2
Availability
Available
Price
$225.00
Size
4.5 x 4 x 3 cm - Miniature 
Tagged
copper  
Special Info
XRD Confirmed 

Dark green tiny prismatic crystals, less than 1mm, of Demesmaekerite (XRD) in with Guilleminite (yellow) and mustard yellow plates of Marthozite. A good specimen. Ex. William Pinch. The matrix is selenium Digenite. Radioactive. Older labels (see prov. tab)


Demesmaekerite

Formula
Pb2Cu5(UO2)2(Se4+O3)6(OH)6·2H2
Crystal System
Triclinic 
Crystal Habit
Aggregates 
Cleavage
None, None, None 
Color
brown, brownish green, green, bottle green 
Class
Triclinic - Pinacoidal 
Hardness
3-4 
Collection
Cooke Collection
Special Info
XRD Confirmed

Kingite

#BN45956
Locality
Tom's Phosphate quarry, Kapunda, South Australia, Australia 
Formula
Al3(PO4)2F2(OH)·7H2
Availability
Available
Price
$30.00
Size
5 x 5.5 x 4.5 cm - Sm Cabinet 
Tagged
phosphate  

White, dull nodular mass.


Kingite

Formula
Al3(PO4)2F2(OH)·7H2
Crystal System
Triclinic 
Crystal Habit
Platy, Irregular Grains, Nodular 
Color
white 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
Collection
Dr. Buford L. Nichols Collection
On Dakota Matrix
Previously Sold Kingite
On Dakota Matrix
Other Available Kingite
WebMineral
View Kingite
Mindat
View Kingite

Microcline

#45961
Locality
Cathedral Rock, Ravalli Co., Montana, United States 
Formula
KAlSi3O8 
Availability
Available
Price
$75.00
Size
9 x 6 x 3 cm - Sm Cabinet 

Sharp, well-formed, well-defined Microcline crystals to 2.5cm. Nice clean, damage free specimen. Collected by Chris van Laer in July of 2002.


Microcline

Formula
KAlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Prismatic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
bluish green, green, gray, grayish yellow, yellowish 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness

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