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Predictive Mineralogy

Possible unrecorded species at Changpu, Yuexi County, Anqing, Anhui, China

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
PyriteFeS299.90%Actinolite (62.14 %), Calcite (51.16 %), Chalcopyrite (75.16 %), Clinozoisite (51.74 %), Epidote (56.37 %), Pyrrhotite (80.12 %), Rutile (52.79 %)
MuscoviteKAl2(AlSi3O10)(OH)276.39%Albite (52.80 %), Taramite (50.00 %)
SphaleriteZnS62.39%Chalcopyrite (50.66 %), Pyrrhotite (55.40 %)
GalenaPbS40.85%Chalcopyrite (51.07 %)
ZirconZr(SiO4)40.00%Taramite (50.00 %)

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
37 : Layered igneous intrusions and related PGE minerals30
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)21
6 : Secondary asteroid phases12
35 : Ultra-alkali and agpaitic igneous rocks7
31 : Thermally altered carbonate, phosphate, and iron formations5
36 : Carbonatites, kimberlites, and related igneous rocks5
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)4
7 : Ultramafic igneous rocks4
26 : Hadean detrital minerals3