Predictive Mineralogy

Possible unrecorded species at Sirengou Pb-Zn deposit, Zhenxun Pb-Zn ore field (Zhen'an-Xunyang Pb-Zn ore field), Xunyang County, Ankang, Shaanxi, China

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
Cerussite	PbCO₃	94.82%	Hemimorphite (64.31 %), Hydrozincite (67.25 %), Smithsonite (55.69 %)
Gypsum	CaSO₄ · 2H₂O	51.14%	Goslarite (51.14 %)
Malachite	Cu₂(CO₃)(OH)₂	50.33%	Hydrozincite (50.33 %)

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
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates] Unique: Smithsonite	100
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]	5
55 : Anthropogenic mine minerals	5
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]	5
38 : Ophiolites	4
56 : Slag and smelter minerals (see also #51 and #55)	4
47b : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Sulfates and sulfites]	4
45b : Oxidized fumarolic minerals (see also [#11]) - [Other oxidized fumarolic minerals]	3
50 : Coal and/or oil shale minerals	2
54 : Coal and other mine fire minerals (see also #51 and #56)	2
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)	0