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Mixed Minerals

Friday, 15 September 2023 04:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including ceruleite, and cyrilovite and more from places like Wheal Gorland, St. Day dist., Cornwall, England, and Iron Monarch mine, Iron Knob, South Australia, Australia.

Ceruleite

#BAC62434
Locality
Wheal Gorland, St. Day dist., Cornwall, England 
Formula
Cu2Al7(AsO4)4(OH)13·12H2
Availability
Available
Price
$45.00
Size
7 x 4.5 x 2 cm - Sm Cabinet 
Tagged
arsenate , copper  

Light blue coatings.


Ceruleite

Formula
Cu2Al7(AsO4)4(OH)13·12H2
Crystal System
Triclinic 
Color
blue, deep blue 
Streak
bluish white 
Class
Triclinic - Pinacoidal 
Hardness
5-6 
Collection
William & Anne Cook Collection
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On Dakota Matrix
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Cyrilovite

with Strengite - #CL62430
Locality
Iron Monarch mine, Iron Knob, South Australia, Australia 
Formula
NaFe3+3(PO4)2(OH)4·2H2
Availability
Available
Price
$55.00
Size
7 x 7 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  

Micro crystalline coatings of Cyrilovite with minor Strengite.


Cyrilovite

Formula
NaFe3+3(PO4)2(OH)4·2H2
Crystal System
Tetragonal 
Crystal Habit
Massive - Granular, Pseudo Cubic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, orange yellow, brown 
Streak
yellow 
Class
Tetragonal - Trapezohedral 
Fracture
Uneven 
Hardness
Collection
Chet S. Lemanski, Jr. Collection

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