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Strengite with Cacoxenite & Beraunite

#BN53065

Strengite with Cacoxenite & Beraunite

#BN53065
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 
Formula
Fe3+PO4·2H2O (RRUFF)
Locality
Jacksonville Road Cut, near Jacksonville, Calhoun Co., Alabama, United States
Tagged
phosphate

As you can see by the number of photos, I was really impressed by this specimen. Not only are there fine, bladed Strengite to 1mm, but there are free-standing deep red Beraunite crystals. In fact, it is the only specimen in this gallery with free-standing Beraunite crystals. Again, these could be Eleonorite. But that is splitting hairs. They are both hydrated iron phosphates. Eleonorite does not have ferrous iron in it's structure and so has one less hydroxyl radical. But I must admit, I have never seen red Beraunite like this from a pegmatite. In pegmatites the Beraunite is typically green to rusty red acicular sprays. Albeit two totally different geological environments.

Elsewhre on this specimen are Cacoxenite "beads". They seem to have been attracted to the Beraunite as seen in the photos with free-standing Beraunite. 

The specimen is a mind blower under the scope.

Strengite

Formula
Fe3+PO4·2H2
Crystal System
Orthorhombic 
Crystal Habit
Spherical, Radial, Botryoidal 
Cleavage
Good, Poor, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale violet, deep violet, red, carmine red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Strengite
On Dakota Matrix
Other Available Strengite
WebMineral
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Mindat
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