Calcium-bearing Pyromorphite

Where it forms, where it's found

7recorded occurrences

Source · OpenStreetMap

Safety & handling

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
82PbLead Lead 5 207.200 1036.000
66.55%
20CaCalcium Calcium 5 40.078 200.390
12.87%
8OOxygen Oxygen 12 15.999 191.988
12.33%
15PPhosphorus Phosphorus 3 30.974 92.922
5.97%
17ClChlorine Chlorine 1 35.450 35.450
2.28%
Total 1556.750 100.00%
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
82PbLead	Lead	5	207.200	1036.000	66.55%
20CaCalcium	Calcium	5	40.078	200.390	12.87%
8OOxygen	Oxygen	12	15.999	191.988	12.33%
15PPhosphorus	Phosphorus	3	30.974	92.922	5.97%
17ClChlorine	Chlorine	1	35.450	35.450	2.28%
	Total	1556.750	100.00%

Synonyms

Calcian Pyromorphite
Calcium Pyromorphite
Miesit
Miessit
Polysphaerit
Polysphaerita
Polysphärit
Polyspharita
Polyspharite

Literature, links & citation

Citations

1832Breithaupt, A. (1832) Vollständige Characteristik etc., 2nd. Edition: 54 (as Polysphaerit).
1841Breithaupt, A. (1841) Vollständige Handbuch der Mineralogie, Vol. 2: 285 (as Miesit).

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Calcium-bearing Pyromorphite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/calcium-bearing-pyromorphite-11380},
  note      = {Accessed 2026-05-11}
}