Predictive Mineralogy

Possible unrecorded species at Dahu vein (Le Cerisier vein), Dahu Mine (Daü Mine; Dahut Mine), Lubilhac, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France

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
Chalcopyrite	CuFeS₂	74.59%	Arsenopyrite (61.33 %), Pyrite (51.72 %), Sphalerite (63.80 %)
Galena	PbS	70.60%	Arsenopyrite (53.61 %), Sphalerite (74.68 %)
Calcite	CaCO₃	51.88%	Baryte (51.88 %)

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
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]	50
47d : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Arsenates, antimonates, selenates, bismuthinates]	50
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])	8
37 : Layered igneous intrusions and related PGE minerals	8
50 : Coal and/or oil shale minerals	6
54 : Coal and other mine fire minerals (see also #51 and #56)	6
36 : Carbonatites, kimberlites, and related igneous rocks	2
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)	2
38 : Ophiolites	2
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)	2