Gratonite

Facts

Chemical formula

Pb₉As₄S₁₅

Crystal system

Trigonal

Mohs hardness

2.5

Elements in formula

Lead, Arsenic, Sulfur

Number of elements

3

IMA status

Grandfathered

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3775858