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Predictive Mineralogy

Possible unrecorded species at Jos-Bukuru, Younger ring complex, Jos Plateau, Plateau, Nigeria

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
MicroclineK(AlSi3O8)92.19%Astrophyllite (53.19 %), Columbite-(Fe) (55.92 %), Genthelvite (62.20 %)
MuscoviteKAl2(AlSi3O10)(OH)286.07%Albite (52.80 %), Columbite-(Fe) (70.50 %)
MagnetiteFe2+Fe3+2O482.24%Fayalite (58.25 %), Hedenbergite (57.46 %)
CalciteCaCO360.34%Hedenbergite (60.34 %)
BerylBe3Al2(Si6O18)57.46%Columbite-(Fe) (57.46 %)
HematiteFe2O356.09%Genthelvite (56.10 %)
PyriteFeS252.34%Hedenbergite (52.35 %)
ChalcopyriteCuFeS240.85%Hedenbergite (51.07 %)

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: Astrophyllite
100
34 : Complex granite pegmatites35
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)12
26 : Hadean detrital minerals11
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)4
36 : Carbonatites, kimberlites, and related igneous rocks3
17 : Marine authigenic Hadean minerals (see also #24)3
19 : Granitic intrusive rocks3
31 : Thermally altered carbonate, phosphate, and iron formations1
6 : Secondary asteroid phases1
5 : Primary asteroid phases1