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Determining Anhydrite
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btay
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Determining Anhydrite

I have had minimal experience with evaporites. Can anyone give me some pointers on determining if cuttings are anhydrite? I have some material that says anhydrite will dissolve in warm HCL. Does that mean that it effervesces until it dissolves or it just dissolves. And will it always "dissolve"?

Any other testing methods or tips that anyone else has would be greatly appreciated.

Thanks,
Btay

05-13-2011 04:36 AM
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geoman77
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RE: Determining Anhydrite

In a spot dish or watch glass cover your sample with HCL. Place it under a heat lamp until the acid is evaporated. Examine the sample for needle-like crystals. Anhydrite does not effervesce.

07-17-2011 12:03 PM
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