Predictive Mineralogy

Possible unrecorded species at Red Dog Mine, Lisburne Mining District (Red Dog Mining District), Northwest Arctic Borough, Alaska, USA

This table is based on statistical analysis of other localities containing similar species to the ones found at this locality.

Possible missing species	Formula	Match %	Due to recorded presence of
Acanthite	Ag₂S	60.64%	Polybasite (60.65 %)
Silver	Ag	57.28%	Polybasite (57.28 %)
Pyrargyrite	Ag₃SbS₃	55.83%	Polybasite (55.84 %)
Arsenopyrite	FeAsS	51.55%	Boulangerite (64.45 %)

Key: Mineral matches key element mineralogy of deposit Key element(s) in mineral not listed for deposit (-20% score)

Predicting paragenetic modes of deposit

Green indicates almost certain match based on minerals unique to a certain deposit type. Yellow indicates a possibly poor match, but should not be entirely discounted. Scores > 100 indicate strong confidence.

Paragenetic Mode	Score
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) Unique: Boulangerite, Polybasite	100
50 : Coal and/or oil shale minerals	0
54 : Coal and other mine fire minerals (see also #51 and #56)	0
49 : Oxic cellular biomineralization (see also #44)	0
15 : Black/white smoker minerals and other seafloor hydrothermal minerals	0
14 : Hot springs, geysers, and other subaerial geothermal minerals	0
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)	0
25 : Evaporites (prebiotic)	0
55 : Anthropogenic mine minerals	0
11 : Volcanic fumarole minerals; reduced phases (see also #45)	0
24 : Authigenic minerals in terrestrial sediments (see also #17)	0