Jordanite

Jordanite
General
Category	Sulfosalt minerals
Formula; (repeating unit)	Pb; 14(As,Sb); 6S; 23
Strunz classification	2.JB.30a
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) ; (same H-M symbol)
Space group	P21/m
Identification
Colour	Lead-grey
Cleavage	Perfect
Fracture	Conchoidal
Tenacity	Brittle
Mohs scale hardness	3
Metallic\|re\|er}}	Metallic
Streak	Black
Density	6.4
Pleochroism	Visible

Jordanite is a sulfosalt mineral with chemical formula Pb
14(As,Sb)
6S
23 in the monoclinic crystal system,^[2] named after the German scientist H. Jordan (1808–1887) who discovered it in 1864.

Lead-grey in colour (frequently displaying an iridescent tarnish), its streak is black and its lustre is metallic. Jordanite has a hardness of 3 on Mohs scale, has a density of approximately 6.4, and a conchoidal fracture.^[2]

The type locality is the Lengenbach Quarry in the Binn Valley, Wallis, Switzerland .^[2]

References

↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
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[1] Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.

[mindat-2] 2.0 ^2.1 ^2.2 Mindat information page for Jordanite