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Mixed Minerals

Friday, 03 December 2021 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including behoite, euxenite-(y), magnetite, and stillwellite-(ce) and more from places like Spor Mountain, Juab County, Utah, United States, Arendal, Aust-Agder, Norway, ZCA #4 mine, Balmat, St. Lawrence Co., New York, United States, and Mary Kathleen mine, Mt. Isa, Queensland, Australia.

Behoite

with Fluorite - #BW57110
Locality
Spor Mountain, Juab County, Utah, United States 
Formula
Be(OH)2 
Availability
Available
Price
$75.00
Size
4 x 3.5 x 1.5 cm - Miniature 

Concretion impregnated with Fluorite. The patterns of the Fluorite are very similar to the reticulated Behoite from MSH. So, is the Fluorite replacing the Behoite? Or is the Behoite filling the gaps left by the Fluorite growth. I can imagine why the Fluorite have this kind of pattern. The Behoite is light yellow.


Behoite

Formula
Be(OH)2 
Crystal System
Orthorhombic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, pale brown 
Streak
white 
Class
Orthorhombic - Disphenoidal 
Hardness
Collection
Bill Wilson Collection
On Dakota Matrix
Previously Sold Behoite
On Dakota Matrix
Other Available Behoite
WebMineral
View Behoite
Mindat
View Behoite

Euxenite-(Y)

#BW57109
Locality
Arendal, Aust-Agder, Norway 
Formula
(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 
Availability
Sold
Size
5.5 x 3 x 1.5 cm - Sm Cabinet 
Special Info
Radioactive!! 

Dark reddish brown Euxenite with a resinous luster. It is mostly massive, but on the main photo you can see embedded growth paterns.


Euxenite-(Y)

Formula
(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 
Crystal System
Orthorhombic 
Crystal Habit
Massive, Granular, Metamict 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
brownish black, brown, yellow, olive green 
Streak
reddish brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
6.5 
Collection
Bill Wilson Collection
Special Info
Radioactive!!

Magnetite

#57079
Locality
ZCA #4 mine, Balmat, St. Lawrence Co., New York, United States 
Formula
Fe2+Fe3+2O4 
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 

Black, shiny, excellent cubic crystals of Magnetite to 9mm.


Magnetite

Formula
Fe2+Fe3+2O4 
Crystal System
Isometric 
Crystal Habit
Massive, Massive - Granular, Crystalline - Fine 
Cleavage
None, None, None 
Luster
Metallic 
Color
grayish black, iron black 
Streak
black 
Class
Isometric - Hexoctahedral 
Fracture
Sub Conchoidal 
Hardness
5.5-6 
Mineralpedia
View Magnetite
On Dakota Matrix
Previously Sold Magnetite
On Dakota Matrix
Other Available Magnetite
WebMineral
View Magnetite
Mindat
View Magnetite

Stillwellite-(Ce)

#BW57117
Locality
Mary Kathleen mine, Mt. Isa, Queensland, Australia 
Formula
CeBSiO5 
Availability
Sold
Size
5 x 3.5 x 1.5 cm - Miniature 
Special Info
Type Locality 

Dark reddish brown crystals to 6mm. This is type locality, and this is avery good specimen.


Stillwellite-(Ce)

Formula
CeBSiO5 
Crystal System
Trigonal 
Crystal Habit
Rhombohedral Crystals, Massive 
Cleavage
Imperfect, None, None 
Luster
Resinous 
Color
red brown, pale pink 
Streak
white 
Class
Trigonal - Pyramidal 
Fracture
Conchoidal 
Hardness
6.5 
Collection
Bill Wilson Collection
Special Info
Type Locality

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