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Predictive Mineralogy

Possible unrecorded species at Cortlandt Township, Westchester County, New York, USA

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
SphaleriteZnS62.39%Chalcopyrite (50.66 %), Pyrrhotite (55.40 %)
GalenaPbS40.85%Chalcopyrite (51.07 %)

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
31 : Thermally altered carbonate, phosphate, and iron formations

Unique: Magnesiohögbomite-6N6S
100
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)23
26 : Hadean detrital minerals17
35 : Ultra-alkali and agpaitic igneous rocks5
36 : Carbonatites, kimberlites, and related igneous rocks4
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits4
38 : Ophiolites3
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)2
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)2
19 : Granitic intrusive rocks1
8 : Mafic igneous rocks1