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Predictive Mineralogy

Possible unrecorded species at Ospa–Kitoi massif (Ospin–Kitoi massif), Il’chir ophiolite belt, Sayan Mountains, Russia

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
Irarsite(Ir,Ru,Rh,Pt)AsS100.00%Geversite (54.00 %), Zaccariniite (100.00 %)
CalciteCaCO399.83%Brucite (64.06 %), Diopside (54.07 %), Gersdorffite (53.89 %), Hedenbergite (60.34 %), Millerite (53.62 %), Stibarsen (73.77 %), Tremolite (55.93 %)
ArsenopyriteFeAsS90.76%Gersdorffite (50.38 %), Gudmundite (81.40 %)
HeazlewooditeNi3S271.73%Orcelite (71.74 %)
Osmium(Os,Ir,Ru)69.54%Iridium (57.36 %), Ruthenium (69.35 %)
TroiliteFeS58.25%Clinoenstatite (58.25 %)
IronFe57.28%Clinoenstatite (57.28 %)
ArsenicAs55.73%Stibarsen (55.74 %)
MalachiteCu2(CO3)(OH)254.65%Covellite (54.66 %)
StibniteSb2S354.09%Stibarsen (54.10 %)
ForsteriteMg2SiO453.39%Clinoenstatite (53.40 %)
EnstatiteMg2Si2O650.48%Clinoenstatite (50.49 %)
ChalcociteCu2S50.30%Covellite (50.30 %)

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: Gudmundite
151
6 : Secondary asteroid phases

Unique: Breunnerite
100
37 : Layered igneous intrusions and related PGE minerals46
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)14
31 : Thermally altered carbonate, phosphate, and iron formations13
34 : Complex granite pegmatites12
7 : Ultramafic igneous rocks8
26 : Hadean detrital minerals8
36 : Carbonatites, kimberlites, and related igneous rocks7
38 : Ophiolites6
13 : Hadean serpentinization4
47i : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Terrestrial weathering of meteorites]4