Predictive Mineralogy

Possible unrecorded species at Rondanera Brook (Rondinera Brook), Marsaglia, Corte Brugnatella, Piacenza Province, Emilia-Romagna, Italy

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
Anatase	TiO₂	76.21%	Brookite (76.21 %)
Galena	PbS	75.90%	Chalcopyrite (51.07 %), Marcasite (58.73 %), Sphalerite (74.68 %)
Rutile	TiO₂	56.67%	Brookite (56.67 %)

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
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]	50
47b : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Sulfates and sulfites]	50
36 : Carbonatites, kimberlites, and related igneous rocks	3
15 : Black/white smoker minerals and other seafloor hydrothermal minerals	3
50 : Coal and/or oil shale minerals	2
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)	2
34 : Complex granite pegmatites	2
24 : Authigenic minerals in terrestrial sediments (see also #17)	2
19 : Granitic intrusive rocks	2
49 : Oxic cellular biomineralization (see also #44)	2