Cleiophane

Where it forms, where it's found

Type locality: Franklin
Sussex County
New Jersey
USA
41.1219°, -74.5808°

36recorded occurrences

Source · OpenStreetMap

Physical

Colour: Colorless to white, green.

Optical

UV response: Fluoresces blue in LW UV, less brightly in MW and SW

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
30ZnZinc Zinc 1 65.380 65.380
67.10%
16SSulfur Sulfur 1 32.060 32.060
32.90%
Total 97.440 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
30ZnZinc	Zinc	1	65.380	65.380	67.10%
16SSulfur	Sulfur	1	32.060	32.060	32.90%
	Total	97.440	100.00%

Synonyms

Cleophane
Cramerite

Literature, links & citation

Citations

1851Nuttall (1851), in Henry, Thomas H (1853) On the White Blende of New Jersey [citing Thomas Nuttall’s name], Philosophical Magazine, v. 1 (Fourth Series), p. 23.
1944Palache, Charles, Berman, Harry, Frondel, Clifford (1944) The System of Mineralogy (7th ed.) Vol. 1 - Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, New York.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Cleiophane — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/cleiophane-8303},
  note      = {Accessed 2026-05-11}
}