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Predictive Mineralogy

Possible unrecorded species at Cold Spring, Town of Philipstown, Putnam 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
QuartzSiO299.99%Actinolite (69.88 %), Calcite (62.43 %), Diopside (51.68 %), Dolomite (62.52 %), Epidote (69.84 %), Laumontite (67.27 %), Magnetite (50.54 %), Molybdenite (66.37 %), Titanite (65.16 %), Tremolite (61.46 %)
PyriteFeS299.54%Actinolite (62.14 %), Calcite (51.16 %), Dolomite (58.22 %), Epidote (56.37 %), Molybdenite (68.29 %), Tremolite (57.83 %)
ChalcopyriteCuFeS265.04%Actinolite (52.26 %), Molybdenite (60.83 %)

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
31 : Thermally altered carbonate, phosphate, and iron formations45
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)6
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)4
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)4
38 : Ophiolites3
10 : Basalt-hosted zeolite minerals3
24 : Authigenic minerals in terrestrial sediments (see also #17)3
14 : Hot springs, geysers, and other subaerial geothermal minerals3
13 : Hadean serpentinization3