Predictive Mineralogy

Possible unrecorded species at Jangada mine, Sarzedo, Minas Gerais, Brazil

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
Quartz	SiO₂	83.94%	Hematite (62.61 %), Wavellite (57.08 %)
Pyrite	FeS₂	50.17%	Hematite (50.17 %)

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
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]	50
24 : Authigenic minerals in terrestrial sediments (see also #17)	0
9 : Lava/xenolith minerals (hornfels, sanidinite facies)	0
10 : Basalt-hosted zeolite minerals	0
14 : Hot springs, geysers, and other subaerial geothermal minerals	0
15 : Black/white smoker minerals and other seafloor hydrothermal minerals	0
17 : Marine authigenic Hadean minerals (see also #24)	0
21 : Chemically precipitated carbonate, phosphate, iron formations	0
53 : Other minerals with taphonomic origins	0