Predictive Mineralogy

Possible unrecorded species at Montroux kaolinite quarry, Montguyon, Jonzac, Charente-Maritime, Nouvelle-Aquitaine, 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
Sphalerite	ZnS	66.52%	Chalcopyrite (50.66 %), Marcasite (65.85 %)
Galena	PbS	63.84%	Chalcopyrite (51.07 %), Marcasite (58.73 %)
Calcite	CaCO₃	60.67%	Marcasite (60.67 %)
Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂	51.80%	Kaolinite (51.81 %)

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
48 : Soil leaching zone minerals Unique: Gibbsite	100
53 : Other minerals with taphonomic origins	1
24 : Authigenic minerals in terrestrial sediments (see also #17)	1
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)	0
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)	0
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]	0
49 : Oxic cellular biomineralization (see also #44)	0
54 : Coal and other mine fire minerals (see also #51 and #56)	0
50 : Coal and/or oil shale minerals	0
15 : Black/white smoker minerals and other seafloor hydrothermal minerals	0
11 : Volcanic fumarole minerals; reduced phases (see also #45)	0