Marmatite

Where it forms, where it's found

215recorded occurrences

Source · OpenStreetMap

Physical

Colour: Black

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
42.65%
26FeIron Iron 1 55.845 55.845
36.43%
16SSulfur Sulfur 1 32.060 32.060
20.92%
Total 153.285 100.00%
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	42.65%
26FeIron	Iron	1	55.845	55.845	36.43%
16SSulfur	Sulfur	1	32.060	32.060	20.92%
	Total	153.285	100.00%

Synonyms

Christophit
Christophita
Christophite
Chrystophit
Chrystophita
Chrystophite
Marmatit
Marmatita

Literature, links & citation

Citations

1829Boussingault (1829), Ann. Phys.: 17: 399.
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.
1966Barton, Paul B., Toulmin, Priestley (1966) Phase relations involving sphalerite in the Fe-Zn-S system. Economic Geology, 61 (5) 815-849 doi:10.2113/gsecongeo.61.5.815DOI: 10.2113/gsecongeo.61.5.815
2007Tan, Zheng, Su, Xuping, Li, Zhi, Liu, Ya, Wang, Jianhua (2007) Phase equilibria in the Zn–Fe–S system at 450°C. International Journal of Materials Research, 98 (1) 16-20 doi:10.3139/146.101435DOI: 10.3139/146.101435

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Marmatite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/marmatite-6294},
  note      = {Accessed 2026-05-11}
}