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Id 112
Identification Type Mineral
Name Trona
Distinguishing Features High birefringence; striations; monoclinic habit; solubility in water
Description Colorless (sometimes cloudy), prismatic or acicular, moderately high relief and high birefringence; may be striated parallel to long dimension. Trona is an evaporite mineral formed in hypersaline lakes or as an efflorescent precipitate on sediment surfaces. Highly soluble in water, and will dissolve and re-precipitate during smear slide manufacturing if water is used; slides should be made using ethanol if the presence of evaporate minerals is suspected.
Tags
External Resources Trona on MinDat
Imposters
Images
Unique Identification: Trona
Site name: Owens
Light type: Plane-Polarized Light
Magnification: 100
Submitted by: Joe Smoot
Notes: high relief, striated and acicular, monoclinic
Image Tags: none
Unique Identification: Trona
Site name: Owens
Light type: Cross-Polarized Light
Magnification: 100
Submitted by: Joe Smoot
Notes: high birefringence, striated and acicular, monoclinic
Image Tags: none