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Predictive Mineralogy

Possible unrecorded species at Laohuge Cu-Ag deposit, Fengshun Co., Meizhou, Guangdong, 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
GalenaPbS77.60%Chalcopyrite (51.07 %), Dickite (50.00 %), Digenite (59.98 %), Enargite (69.48 %)
KaoliniteAl2(Si2O5)(OH)476.03%Alunite (51.69 %), Dickite (50.40 %)
SphaleriteZnS75.45%Chalcopyrite (50.66 %), Digenite (61.34 %), Enargite (70.24 %)
CovelliteCuS71.99%Digenite (72.00 %)
BorniteCu5FeS468.35%Digenite (68.36 %)
ChalcociteCu2S65.39%Digenite (65.40 %)
MalachiteCu2(CO3)(OH)254.14%Digenite (54.15 %)
CalciteCaCO352.28%Digenite (52.28 %)

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
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Unique: Enargite
100
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)4
28 : Photo-alteration, pre-biotic4
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)4
50 : Coal and/or oil shale minerals0
34 : Complex granite pegmatites0
54 : Coal and other mine fire minerals (see also #51 and #56)0
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]0
46 : Near-surface hydrothermal alteration of minerals (see also #22)0
45a : Oxidized fumarolic minerals (see also [#11]) - [Sulfates, arsenates, selenates, antimonates]0
47b : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Sulfates and sulfites]0