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Gypsum

JIP-sum
Sulfate Minerals

A soft sulfate mineral of calcium sulfate dihydrate, defining hardness value 2 on the Mohs scale. It forms as an evaporite and as a hydration product of anhydrite, crystallizes as translucent selenite, and is widely mined as a fertilizer and as the main constituent of plaster, drywall and chalk. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
Crystal System
Monoclinic 1
Classification
Sulfate Mineral 1
Use
Building and Construction 1
Use
Soil Amendment or Fertilizer 1
Kind
Mineral 1
Formation Class
Evaporite (forms as an evaporite mineral and as a hydration product of anhydrite) 1
Chemical Formula
CaSO4 2H2O (calcium sulfate dihydrate) 1
Hardness (Mohs)
2 1
Connections

Associated With

Evaporite, Materials

Gypsum named as one of the most common marine evaporite minerals.

Source Evaporite (Wikipedia)
Mohs Hardness Scale, Concepts

The Mohs scale defines gypsum as hardness value 2.

Source Gypsum (Wikipedia)

Caused By

Sedimentation, Processes
Source Gypsum (Wikipedia)

Classified As

Sulfate Minerals, Subcategories

Crystallizes In System

Monoclinic Crystal System, Concepts

In Discipline

Mineralogy, Disciplines
Source Gypsum (Wikipedia)
In the Other Atlases

Mineral Species Of

Selenite

Also in Divinity Atlas: of this mineral species.

Sources
1. Gypsum (Wikipedia)
Wikimedia Foundation
  • Lead section
    The Mohs scale of mineral hardness defines gypsum as hardness value 2 based on scratch hardness comparison.
  • Lead section
    Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
  • Infobox: system
    Monoclinic
  • Article text
    It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.
View the Source
Wikidata: Gypsum
Wikidata Q82658
Evaporite (Wikipedia)
Wikimedia FoundationAssociated With: Evaporite, Marine evaporite minerals section
Quote, Associated With: Evaporite, Marine evaporite minerals section
The most common marine evaporites are calcite, gypsum and anhydrite, halite, sylvite, carnallite, langbeinite, polyhalite, and kainite.
View the Source
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