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Predictive Mineralogy

Possible unrecorded species at Douradinho river valley, Coromandel, Coromandel mining district, 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 speciesFormulaMatch %Due to recorded presence of
QuartzSiO299.18%Baryte (60.21 %), Calcite (62.43 %), Gorceixite (68.49 %), Ilmenite (52.06 %), Zircon (64.02 %)
MagnetiteFe2+Fe3+2O486.13%Ilmenite (57.89 %), Perovskite (67.07 %)
PyriteFeS275.96%Baryte (50.79 %), Calcite (51.16 %)
DiopsideCaMgSi2O652.39%Perovskite (52.40 %)

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 ModeScore
36 : Carbonatites, kimberlites, and related igneous rocks50
26 : Hadean detrital minerals42
7 : Ultramafic igneous rocks34
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)26
38 : Ophiolites21
6 : Secondary asteroid phases20
30 : Terrestrial impact minerals14
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits14
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]13
48 : Soil leaching zone minerals13