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Id 107
Identification Type Mineral
Name Albite
Distinguishing Features polysynthetic-twinning
Description Clear to pale yellow. Nonpleochroic. Low birefringence. Euhedral laths possible in volcanic settings, generally subrounded/subangular in shape. High relief. Can be distinguished from quartz by its 90 degree cleavage. Polysynthetic (albitic, simple) twinning is diagnostic. Sodium endmember of plagioclase solid solution series.

See also feldspar.

"Elongate prisms in multiple domains" -Smoot
Tags feldspar
silicate
plagioclase
External Resources Albite on MinDat
Imposters
Images
Unique Identification: Albite
Site name: Bear
Light type: Plane-Polarized Light
Magnification: 400x
Submitted by: Joe Smoot
Notes: translucent, irregular outline with multiple prism shape domains internal
Image Tags: test
Unique Identification: Albite
Site name: Bear
Light type: Cross-Polarized Light
Magnification: 400x
Submitted by: Joe Smoot
Notes: low birefringence of elongate prisms in multiple domains
Image Tags: none