Assertion: arsenic | /r/AtLocation | high concentration
Facets:
value: in sulfide deposits
type: LOCATION
Source sentences:
text: Arsenic is found in high concentration in sulfide deposits, where it is present as the native element or alloys (four minerals), arsenides (27 minerals), sulfides (13 minerals), sulfosalts (sulfides of arsenic with metals, such as lead, copper, silver, and thallium, 65 minerals), and the oxidation products of the foregoing (two oxides, 11 arsenites, 116 arsenates, and seven silicates).