Predictive Mineralogy

Possible unrecorded species at Badger Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, 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
Sphalerite	ZnS	99.89%	Chalcanthite (54.35 %), Chalcopyrite (50.66 %), Covellite (64.68 %), Digenite (61.34 %), Enargite (70.24 %), Galena (65.95 %), Marcasite (65.85 %)
Malachite	Cu₂(CO₃)(OH)₂	96.61%	Chalcanthite (62.86 %), Chalcocite (56.20 %), Covellite (54.66 %), Digenite (54.15 %)

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: Enargite	100
34 : Complex granite pegmatites	4
31 : Thermally altered carbonate, phosphate, and iron formations	4
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits	4
26 : Hadean detrital minerals	4
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)	4
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)	4
50 : Coal and/or oil shale minerals	1
54 : Coal and other mine fire minerals (see also #51 and #56)	1
15 : Black/white smoker minerals and other seafloor hydrothermal minerals	1
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)	1