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Kidwellite with Beraunite

#BN53081

Kidwellite with Beraunite

#BN53081
Availability
Sold
Size
17 x 10 x 6 cm - Cabinet 
Formula
NaFe3+9(PO4)6(OH)11·3H2O (RRUFF)
Locality
Three Oaks Gap, Polk Co., Arkansas, United States
Tagged
phosphate

Large specimen! The Kidwellite occurs as cloud-like formations, bubbly and globular in habit. It also shows colors of greens and yellows, which grades from a dark green on the left to a forrest green, light green and then a nice yellowish green and finally a flat out yellow near the center of the photo. On the far right side the Kidwellite covers bladed red Beraunite. The last photo shows the Beraunite.

Kidwellite

Formula
NaFe3+9(PO4)6(OH)11·3H2
Crystal System
Monoclinic 
Crystal Habit
Fibrous, Columnar 
Cleavage
Perfect, None, None 
Luster
Silky 
Color
greenish yellow, greenish white, yellow, light green 
Streak
yellow 
Class
Monoclinic - Prismatic 
Hardness

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection

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