Cookeite

  

 

  

  

Origin: Green mine, Saline Co., Arkansas, U.S.A.

Sample size: 4 x 3 x 2 cm with light green crystal rosettes to 4 mm (top), 7 x 4 x 2.5 cm (2nd/bottom row)

 

  

Light yellow to white pearly rosettes of cookeite to 1 mm overgrown on water-clear quartz crystals to 2 cm.

Origin: Jeffrey Quarry, Pulaski Co., Arkansas, United States

Ex. DeVito collection

Sample size: 6 x 6 x 3 cm

 

Photo courtesy of: 

     

Neat pseudomorph or cast specimen with brown crystallized cookeite forming an open cast around what was a spodumene crystal, leaving a hollow shell.

Photo courtesy of: 

Cookeite occurs as greenish-brown spherical aggregates in cavities between cm-sized albite crystals; lepidolite is associated.

Origin: Bennett Pegmatite, Oxford Co., Maine, U.S.A.

Sample size: ca. 6 x 7 cm

 

Flakes of purple cookeite on quartz matrix
Origin: BB#7 Quarry, Greenwood, Maine, U.S.A.

Sample size: 3 x 3.5 cm

 

  

Cookite plus lepidolite pseudomorph after tourmaline. Lepidolite crystals are situated in the core of the large crystal with cookeite crystals more pronounced in the rim

Origin: Minas Gerais, Brazil

Sample size: 3 x 4 x 5 cm

Photo courtesy of: 

  

  

One large (2.6 cm) blue-purple fluorite cube on a white-beige cookite matrix with a nicely-terminated quartz crystal sticking up next to the fluorite.

Origin: Yaogangxian Mine, Hunan Prov., China

Ex. Dave Douglass collection

Sample size: 10 x 8 x 4 cm

 

Photo courtesy of: 

  

Page 2