Gypsum (Inventory)/Coating
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The '''Coating''' field of the [[Gypsum (Inventory)|Gypsum]] section should be used to list stations where a coating of gypsum is found. | The '''Coating''' field of the [[Gypsum (Inventory)|Gypsum]] section should be used to list stations where a coating of gypsum is found. | ||
| - | A gypsum coating is a thin layer or layers of gypsum usually over bedrock or breakdown. It sometimes appears in | + | A gypsum coating is a thin layer or layers of gypsum usually over bedrock or breakdown. It sometimes appears in star-like patterns but can take on many shapes. It can form on soils or even guano but is usually on rock. It is much thinner than a [[Gypsum (Inventory)/Crust|gypsum crust]] and more tightly adhered to the underlying structure. The distinctions between a gypsum coating and a gypsum crust may be subtle. |
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Gypsum sometimes makes starbursts while calcite tends to have squarish crystals. Aragonite and moonmilk are both bright white. Coatings may build up in layers, coating upon coating, to form thicker coatings. | Gypsum sometimes makes starbursts while calcite tends to have squarish crystals. Aragonite and moonmilk are both bright white. Coatings may build up in layers, coating upon coating, to form thicker coatings. | ||
Current revision as of 17:41, 25 June 2011
The Coating field of the Gypsum section should be used to list stations where a coating of gypsum is found.
A gypsum coating is a thin layer or layers of gypsum usually over bedrock or breakdown. It sometimes appears in star-like patterns but can take on many shapes. It can form on soils or even guano but is usually on rock. It is much thinner than a gypsum crust and more tightly adhered to the underlying structure. The distinctions between a gypsum coating and a gypsum crust may be subtle.
Gypsum sometimes makes starbursts while calcite tends to have squarish crystals. Aragonite and moonmilk are both bright white. Coatings may build up in layers, coating upon coating, to form thicker coatings.
See also
References
- Hill, Carol; Paolo Forti (1997) Cave Minerals of the World (Second Edition ed.) National Speleological Society pp 55-56, 145 ISBN: 1-879961-07-5
