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1 item @ $40.00  

Colorado Plateau Minerals

Saturday, 13 January 2024 05:30 PM

The Colorado Plateau encompasses a large area of the southwest including Arizona, Colorado, New Mexico and Utah. Many of these minerals are formed in roll front uranium deposits. They can be bright yellow or orange and beautiful to see under the microscope.

Paramontroseite

#BAC63187
Locality
Big Gypsum Valley, San Miguel Co., Colorado, United States 
Formula
VO2 
Availability
Sold
Size
3.5 x 2.3 x 1.2 cm - Miniature 
Tagged
vanadium  

Superb orthorhombic prismated black crystals in nest-like groups. The specimen originated with Patrick Haynes, an accomplished field collector and mineralogist,


Paramontroseite

Formula
VO2 
Crystal System
Orthorhombic 
Cleavage
Good, None, None 
Luster
Sub Metallic 
Color
black 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
Collection
William & Anne Cook Collection

Phurcalite

#AH63205
Locality
Posey mine, San Juan Co., Utah, United States 
Formula
Ca2(UO2)3O2(PO4)2·7H2
Availability
Sold
Size
4 x 4 x 2 cm - Miniature 
Tagged
phosphate  
Special Info
Radioactive!! 

Bright yellow acicular crystals throughout sandstone matrix.


Phurcalite

Formula
Ca2(UO2)3O2(PO4)2·7H2
Crystal System
Orthorhombic 
Cleavage
Perfect, Perfect, Good 
Luster
Vitreous - Adamantine 
Color
yellow 
Streak
yellow white 
Class
Orthorhombic - Dipyramidal 
Hardness
Collection
Arnold G Hampson Collection
Special Info
Radioactive!!
SOLD
Phurcalite - AH63206
Phurcalite - AH63206

Phurcalite

#AH63206
Locality
Posey mine, San Juan Co., Utah, United States 
Formula
Ca2(UO2)3O2(PO4)2·7H2
Availability
Sold
Size
5 x 2 x 2 cm - Miniature 
Tagged
phosphate  
Special Info
Radioactive!! 

Bright yellow, tiny acicular crystals.


Phurcalite

Formula
Ca2(UO2)3O2(PO4)2·7H2
Crystal System
Orthorhombic 
Cleavage
Perfect, Perfect, Good 
Luster
Vitreous - Adamantine 
Color
yellow 
Streak
yellow white 
Class
Orthorhombic - Dipyramidal 
Hardness
Collection
Arnold G Hampson Collection
Special Info
Radioactive!!
SOLD
Pintadoite - 57717
Pintadoite - 57717

Pintadoite

#57717
Locality
West Sunday mine, San Miguel Co., Colorado, United States 
Formula
Ca2(V2O7) · 9H2
Availability
Sold
Size
2.5 x 2 x 1.5 cm - Thumbnail 

Olive green pulverulent masses.


Pintadoite

Formula
Ca2V2O7�9(H2O) 
Crystal System
Tetragonal 
Crystal Habit
Efflorescences 
Color
light green, dark green 
Streak
yellow green 
Class
Tetragonal 
Hardness

Santafeite

#BAC63191
Locality
Monument #1 mine, Navajo Co., Arizona, United States 
Formula
(Ca,Sr,Na)3(Mn2+,Fe3+)2Mn4+2(VO4)4(OH,O)5·2H2
Availability
Sold
Size
4.5 x 2.5 x 2 cm - Miniature 
Tagged
vanadium  

Black impregnation of sandstone with yellow unknown.


Santafeite

Formula
(Ca,Sr,Na)3(Mn2+,Fe3+)2Mn4+2(VO4)4(OH,O)5·2H2
Crystal System
Orthorhombic 
Crystal Habit
Encrustations, Acicular 
Cleavage
Perfect, Distinct, None 
Luster
Subadamantine 
Color
black 
Streak
brown 
Class
Orthorhombic - Disphenoidal 
Fracture
Brittle 
Hardness
Collection
William & Anne Cook Collection

Schoepite

#AH63188
Locality
Happy Jack mine, White Canyon, San Juan Co., Utah, United States 
Formula
(UO2)8O2(OH)12·12H2
Availability
Sold
Size
7 x 5 x 1 cm - Sm Cabinet 
Special Info
XRD Confirmed 
Special Info
Raman 

Glassy, bright yellow radial and flat-lying crystals. Very specimen. 


Schoepite

Formula
(UO2)8O2(OH)12·12H2
Crystal System
Orthorhombic 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
yellow, lemon yellow, brownish yellow, amber 
Streak
light yellow 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Special Info
XRD Confirmed
Special Info
Raman
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