Mineralogy Database

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Sample n° 13703

Minerals found in the sample

Mineral	Formula	Category	Subcategory	Importance
JAHNSITE	CaMn2+Mg2Fe3+2(PO4)4(OH)2•8H2O	phosphates	-	major

Description

Description: black prismatic crystals (8 mm)

Information: specimen from type locality

Origin

• Country: USA
• Region: South Dakota
• Locality: Custer City, Tip Top Mine

Specification

• Donors: Segeler
  Donation year: 1980
• Sampling year:
  Registration date:
• Quantity: 1
  Size: 3

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

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