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Predictive Mineralogy

Possible unrecorded species at Les Chalanches Mine, Allemond, Grenoble, Isère, Auvergne-Rhône-Alpes, 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
CerussitePbCO398.35%Anglesite (71.56 %), Argentojarosite (55.38 %), Pyromorphite (68.61 %), Wulfenite (58.77 %)
PyrrhotiteFe1-xS92.67%Cobaltite (57.03 %), Dyscrasite (57.92 %), Ullmannite (59.50 %)
MuscoviteKAl2(AlSi3O10)(OH)281.31%Schachnerite (50.00 %), Schorl (62.64 %)
SphaleriteZnS79.99%Acanthite (62.85 %), Anglesite (64.09 %), Ankerite (53.36 %), Annabergite (52.59 %), Antimony (62.23 %), Argentojarosite (58.46 %), Arsenic (61.97 %), Arsenolite (58.17 %), Arsenopyrite (55.02 %), Bieberite (53.57 %), Bismuth (53.21 %), Chalcopyrite (50.66 %), Cobaltite (60.74 %), Dyscrasite (77.38 %), Erythrite (50.44 %), Galena (65.95 %), Löllingite (59.55 %), Moschellandsbergite (52.00 %), Nickeline (53.48 %), Proustite (64.85 %), Pyrargyrite (69.84 %), Pyromorphite (56.90 %), Safflorite (56.95 %), Schachnerite (68.75 %), Stibarsen (59.02 %), Ullmannite (81.84 %), Valentinite (52.42 %)
MercuryHg76.00%Moschellandsbergite (52.00 %), Schachnerite (50.00 %)
MilleriteNiS68.18%Tučekite (68.18 %)
ParaschachneriteAg3Hg250.00%Schachnerite (50.00 %)
SideriteFeCO350.00%Schachnerite (50.00 %)
GersdorffiteNiAsS50.00%Tučekite (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
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Unique: Arsenic, Dyscrasite, Moschellandsbergite, Proustite, Pyrargyrite, Safflorite, etc.
932
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]

Unique: Wulfenite
136
47g : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Halogen-bearing surface weathering minerals]

Unique: Chlorargyrite
100
47d : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Arsenates, antimonates, selenates, bismuthinates]63
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]57
37 : Layered igneous intrusions and related PGE minerals26
47b : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Sulfates and sulfites]26
34 : Complex granite pegmatites18
49 : Oxic cellular biomineralization (see also #44)13
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]11
54 : Coal and other mine fire minerals (see also #51 and #56)10
50 : Coal and/or oil shale minerals10
53 : Other minerals with taphonomic origins7