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Predictive Mineralogy

Possible unrecorded species at Chaum, Saint-Gaudens, Haute-Garonne, Occitanie, France

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
QuartzSiO299.41%Actinolite (69.88 %), Epidote (69.84 %), Schorl (81.37 %), Titanite (65.16 %)
CalciteCaCO389.60%Actinolite (55.10 %), Epidote (51.60 %), Titanite (52.17 %)
PyriteFeS283.48%Actinolite (62.14 %), Epidote (56.37 %)
MuscoviteKAl2(AlSi3O10)(OH)262.63%Schorl (62.64 %)
MagnetiteFe2+Fe3+2O453.37%Actinolite (53.38 %)
ChalcopyriteCuFeS241.80%Actinolite (52.26 %)

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
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)50
26 : Hadean detrital minerals27
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)27
34 : Complex granite pegmatites27
31 : Thermally altered carbonate, phosphate, and iron formations25
19 : Granitic intrusive rocks25
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)23
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)23
43 : Shear-induced minerals (including mylonite/slickensides)14
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)14