Mineralogy Database

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Sample n° 13617

Minerals found in the sample

Mineral	Formula	Category	Subcategory	Importance
STEVENSITE	(Ca,Na)xMg3-ySi4O10(OH)2	phyllosilicates	smectite	major
GYPSUM	Ca(SO4)•2H2O	sulfates	-	minor

Description

Description: soap-like coating (stevensite), small gypsum crystals

Information: specimen from type locality

Origin

• Country: Morocco
• Region: Boulemane Province
• Locality: Djebel Ghasoul

Specification

• Donors: Ecole des Mines de Paris Guillemin
  Donation year: 1979
• Sampling year:
  Registration date:
• Quantity: 1
  Size: 2

• Dimension code 1>2>3: 3
  Quality code 1>2>3: 1
• Holotype: no
  Paratype: no
  Radioactive: no
• Thin section: no
  Chemical analysis: no
  X-Ray spectra: yes

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