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Predictive Mineralogy

Possible unrecorded species at Bayan Obo deposit, Bayan Obo, Bayan Obo mining district, Baotou City (Baotou Prefecture), Inner Mongolia, 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
NephelineNa3K(Al4Si4O16)99.83%Aegirine-augite (50.72 %), Britholite-(Ce) (53.96 %), Cordylite-(Ce) (55.00 %), Daqingshanite-(Ce) (57.14 %), Fergusonite-(Ce) (52.38 %), Fluorcalciopyrochlore (51.72 %), Loparite-(Ce) (67.12 %), Tainiolite (50.00 %)
BerylBe3Al2(Si6O18)94.70%Chrysoberyl (57.29 %), Columbite-(Fe) (57.46 %), Columbite-(Mn) (70.83 %)
Ancylite-(Ce)CeSr(CO3)2(OH) · H2O80.00%Cordylite-(Ce) (60.00 %), Daqingshanite-(Ce) (50.00 %)
SodaliteNa4(Si3Al3)O12Cl75.34%Cordylite-(Ce) (50.00 %), Loparite-(Ce) (50.68 %)
Aeschynite-(Y)(Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)666.66%Aeschynite-(Nd) (66.67 %)
RhodochrositeMnCO361.61%Jacobsite (61.62 %)
CerussitePbCO358.77%Wulfenite (58.77 %)
GrossularCa3Al2(SiO4)357.14%Ferrisepiolite (57.14 %)
ForsteriteMg2SiO456.73%Clinohumite (56.74 %)
AnalcimeNa(AlSi2O6) · H2O55.00%Cordylite-(Ce) (55.00 %)
NatroliteNa2Al2Si3O10 · 2H2O54.79%Loparite-(Ce) (54.79 %)
HausmanniteMn2+Mn3+2O452.52%Jacobsite (52.53 %)
KaoliniteAl2(Si2O5)(OH)451.68%Alunite (51.69 %)
Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)550.00%Cordylite-(Ce) (50.00 %)
RhodoniteCaMn3Mn[Si5O15]50.00%Jacobsite (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
35 : Ultra-alkali and agpaitic igneous rocks

Unique: Britholite-(Ce), Cerianite-(Ce), Cordylite-(Ce), Fluorbritholite-(Ce), Loparite-(Ce), Thorbastnäsite
757
34 : Complex granite pegmatites

Unique: Aeschynite-(Nd), Brockite, Clinofergusonite-(Ce), Clinofergusonite-(Nd), Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
643
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]

Unique: Halloysite, Ferrisepiolite
209
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)

Unique: Paralstonite
168
36 : Carbonatites, kimberlites, and related igneous rocks156
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Unique: Fluorokinoshitalite
121
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]

Unique: Wulfenite
100
26 : Hadean detrital minerals77
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)39
31 : Thermally altered carbonate, phosphate, and iron formations26
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)17
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]14
17 : Marine authigenic Hadean minerals (see also #24)12
19 : Granitic intrusive rocks11
6 : Secondary asteroid phases9
9 : Lava/xenolith minerals (hornfels, sanidinite facies)8