Checkout

0 item @ $0.00

Home | My Cart | Login | Register

Recently Released Special Editions

Hide Solds

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.

SOLD

Doloresite

#BAC63182

Details
Data
Provenance
Resources

Locality: Monument #2 mine, Apache Co., Arizona, United States
Formula: V⁴⁺₃O₄(OH)₄
Availability: Sold
Size: 3.5 x 1.8 x 1.7 cm - Miniature
Tagged: vanadium

This is basically a sandstone specimen which iis pregnated with glossy black Doloresite.

Doloresite

Formula: V⁴⁺₃O₄(OH)₄
Crystal System: Monoclinic
Crystal Habit: Botryoidal, Twinning Common
Cleavage: Good, None, None
Luster: Sub Metallic
Color: dark brown, black
Streak: greenish black
Class: Monoclinic - Prismatic
Fracture: Fibrous
Hardness: -

Collection: William & Anne Cook Collection

On Dakota Matrix: Previously Sold Doloresite
On Dakota Matrix: Other Available Doloresite
WebMineral: View Doloresite
Mindat: View Doloresite

SOLD

Fervanite

#BAC63198

Details
Data
Provenance
Resources

Locality: Gypsum Valley dist., San Miguel Co., Colorado, United States
Formula: Fe³⁺₄V⁵⁺₄O₁₆·5H₂O
Availability: Sold
Size: 4 x 2.3 x 2.2 cm - Miniature
Tagged: vanadium
Special Info: Type Locality

Golden fibrous Fervanite crystals up to 4mm in length at random, but oriented groups in sandstone matrix. The original label does not mention a specific mine only the district of "Gypsum Valley". There are three occurences in the district tabulated or mapped on Mindat, which is the Sullivan Brothers claim, Truck Group, and the Yellow Jacket occurence". Clicking on the GeoNames there are around a dozen other mines.

Fervanite

Formula: Fe³⁺₄V⁵⁺₄O₁₆·5H₂O
Crystal System: Monoclinic
Crystal Habit: Fibrous
Cleavage: None, None, None
Luster: Adamantine
Color: yellow, brown, pale green
Streak: yellowish brown
Class: Monoclinic
Hardness: -

Collection: William & Anne Cook Collection
Special Info: Type Locality

Mineralpedia: View Fervanite
On Dakota Matrix: Previously Sold Fervanite
On Dakota Matrix: Other Available Fervanite
WebMineral: View Fervanite
Mindat: View Fervanite

SOLD

Hewettite

#AH63165

Details
Data
Provenance
Resources

Locality: Cactus Rat mine, Grand Co., Utah, United States
Formula: CaV⁵⁺₆O₁₆·9H₂O
Availability: Sold
Size: 9 x 6.5 x 4 cm - Sm Cabinet
Tagged: vanadium

Large specimen of conglomerate with flash rusty red Hewettite throughout carbonized mass.

Hewettite

Formula: CaV⁵⁺₆O₁₆·9H₂O
Crystal System: Monoclinic
Crystal Habit: Acicular
Luster: Silky
Color: red
Streak: brownish red
Class: Monoclinic - Prismatic
Hardness: -

Collection: Arnold G Hampson Collection

Mineralpedia: View Hewettite
On Dakota Matrix: Previously Sold Hewettite
On Dakota Matrix: Other Available Hewettite
WebMineral: View Hewettite
Mindat: View Hewettite

SOLD

Hewettite

#BAC63202

Details
Data
Provenance
Resources

Locality: Cactus Rat mine, Grand Co., Utah, United States
Formula: CaV⁵⁺₆O₁₆·9H₂O
Availability: Sold
Size: 1.8 x 0.8 x 0.6 cm - Thumbnail
Tagged: vanadium

Excellent long fibrous Hewettite crystals to 7mm. Small specimen.

Hewettite

Formula: CaV⁵⁺₆O₁₆·9H₂O
Crystal System: Monoclinic
Crystal Habit: Acicular
Luster: Silky
Color: red
Streak: brownish red
Class: Monoclinic - Prismatic
Hardness: -

Collection: William & Anne Cook Collection

Mineralpedia: View Hewettite
On Dakota Matrix: Previously Sold Hewettite
On Dakota Matrix: Other Available Hewettite
WebMineral: View Hewettite
Mindat: View Hewettite

SOLD

Kokinosite

with Lasalite - #57728

Details
Data
Provenance
Resources

Locality: Pickett Corral mine, Montrose Co., Colorado, United States
Formula: Na₂Ca₂(V₁₀O₂₈) · 24H₂O
Availability: Sold
Size: 4 x 1.5 x 0.6 cm - Miniature

A specimen of Kokinosite, a relatively new mineral published in 2014 by Dr. Anthony Kampf et al and originally found at the St. Jude mine, San Miguel County, Colorado. This specimen was collected by Joe Marty, one of the authors of the original publcation. Please note that this is a new locality for the mineral. The Kokinosite are the opaque orange 1-3mm groups consisting of 0.5-1mm crystals. Associated are darker, translucent crystals of Lasalite (last photo). This is an exceptional specimen of this rare mineral.

Kokinosite

Mineralpedia: View Kokinosite
On Dakota Matrix: Previously Sold Kokinosite
On Dakota Matrix: Other Available Kokinosite
WebMineral: View Kokinosite
Mindat: View Kokinosite

SOLD

Lasalite

#BAC63199

Details
Data
Provenance
Resources

Locality: Vanadium Queen mine, near La Sal, San Juan Co., Utah, United States
Formula: Na₂Mg₂(V₁₀O₂₈)·20H₂O
Availability: Sold
Size: 3 x 1 x 2 cm - Thumbnail
Tagged: vanadium
Special Info: Type Locality

Glassy orange crystals with no discernable shapes. Lasalite is fairly rare and occurs at only eight localities all in the Colorado Plateau in Utah and Colorado. It was described by John Huges and others in 2008. Many of the localities were found by Joe Marty, a prolific field collector.

Lasalite

Formula: Na₂Mg₂(V₁₀O₂₈)·20H₂O
Crystal System: Monoclinic
Crystal Habit: Prismatic, Efflorescences
Cleavage: None, None, None
Luster: Vitreous (Glassy)
Color: yellow, yellow orange
Streak: yellow
Class: Monoclinic - Prismatic
Fracture: Brittle
Hardness: 1

Collection: William & Anne Cook Collection
Special Info: Type Locality

Mineralpedia: View Lasalite
On Dakota Matrix: Previously Sold Lasalite
On Dakota Matrix: Other Available Lasalite
WebMineral: View Lasalite
Mindat: View Lasalite

New Minerals

Daily Five Minerals

Special Editions
by Mineral Gallery

All Mineral Specimens
A to Z

Searches

Searches

Recently Released Special Editions

Colorado Plateau Minerals