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Predictive Mineralogy

Possible unrecorded species at Madagascar

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
KotulskitePd(Te,Bi)2-x (x ≈ 0.4)99.54%Isomertieite (59.02 %), Keithconnite (66.67 %), Michenerite (55.19 %), Palladoarsenide (70.00 %), Stillwaterite (75.00 %)
BerauniteFe3+6(PO4)4O(OH)4 · 6H2O96.42%Bermanite (59.68 %), Rockbridgeite (54.82 %), Stewartite (80.36 %)
Heterosite(Fe3+,Mn3+)PO495.94%Barbosalite (57.78 %), Stewartite (62.50 %), Tavorite (74.36 %)
MoncheitePt(Te,Bi)293.92%Michenerite (53.25 %), Palladoarsenide (64.00 %), Stillwaterite (63.89 %)
LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O92.82%Bermanite (51.61 %), Stewartite (67.86 %), Tavorite (53.85 %)
VysotskitePdS92.10%Keithconnite (52.63 %), Palladoarsenide (60.00 %), Stillwaterite (58.33 %)
HaliteNaCl91.95%Chambersite (50.00 %), Mirabilite (59.29 %), Nahcolite (60.47 %)
HemimorphiteZn4Si2O7(OH)2 · H2O91.49%Aurichalcite (50.47 %), Hydrozincite (52.67 %), Rosasite (63.74 %)
PyrargyriteAg3SbS386.77%Miargyrite (70.05 %), Polybasite (55.84 %)
StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2O85.71%Bermanite (50.00 %), Stewartite (71.43 %)
MerenskyitePdTe285.54%Michenerite (65.58 %), Palladoarsenide (58.00 %)
MontebrasiteLiAl(PO4)(OH)83.33%Hydroxykenomicrolite (83.33 %)
Osmium(Os,Ir,Ru)81.99%Cuprorhodsite (54.39 %), Kashinite (60.53 %)
EpididymiteNa2Be2Si6O15 · H2O66.66%Chiavennite (66.67 %)
ScorzaliteFe2+Al2(PO4)2(OH)265.00%Trolleite (65.00 %)
TronaNa3H(CO3)2 · 2H2O64.93%Thermonatrite (64.94 %)
HelvineBe3Mn2+4(SiO4)3S58.33%Chiavennite (58.33 %)
EosphoriteMn2+Al(PO4)(OH)2 · H2O53.57%Stewartite (53.57 %)
MilleriteNiS52.98%Heazlewoodite (52.99 %)
EudidymiteNa2Be2Si6O15 · H2O50.00%Chiavennite (50.00 %)
WöhleriteNa2Ca4ZrNb(Si2O7)2O3F50.00%Chiavennite (50.00 %)
Rhabdophane-(Ce)Ce(PO4) · 0.6H2O50.00%Rhabdophane-(Nd) (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
34 : Complex granite pegmatites

Unique: Achalaite, Béhierite, Bismutotantalite, Brockite, Cesiokenopyrochlore, Columbite-(Mg), etc.
3,118
35 : Ultra-alkali and agpaitic igneous rocks

Unique: Astrophyllite, Britholite-(Ce), Catapleiite, Cerianite-(Ce), Ferri-winchite, Fluorbritholite-(Ce), etc.
1,455
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Unique: Arsenic, Cosalite, Dyscrasite, Miargyrite, Polybasite
577
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)

Unique: Amesite, Kornerupine, Schreyerite, Werdingite
554
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]

Unique: Halloysite, Tungstite
376
19 : Granitic intrusive rocks

Unique: Boralsilite, Magnesio-lucchesiite, Zektzerite
315
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)

Unique: Serendibite, Sinhalite
291
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)

Unique: Jeremejevite, Lipscombite
288
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]

Unique: Bismite, Wulfenite
216
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]

Unique: Smithsonite
210
36 : Carbonatites, kimberlites, and related igneous rocks

Unique: Bastnäsite-(La)
178
31 : Thermally altered carbonate, phosphate, and iron formations

Unique: Potassic-fluoro-pargasite
176
26 : Hadean detrital minerals153
48 : Soil leaching zone minerals

Unique: Gibbsite
138
53 : Other minerals with taphonomic origins

Unique: Oxyvanite
122
47g : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Halogen-bearing surface weathering minerals]

Unique: Chlorargyrite
104
10 : Basalt-hosted zeolite minerals

Unique: Stellerite
103
25 : Evaporites (prebiotic)

Unique: Chambersite
100
37 : Layered igneous intrusions and related PGE minerals85
50 : Coal and/or oil shale minerals48
6 : Secondary asteroid phases48
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits36
9 : Lava/xenolith minerals (hornfels, sanidinite facies)30
54 : Coal and other mine fire minerals (see also #51 and #56)28
3 : Solar nebular condensates (CAIs, AOAs, URIs)26
47d : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Arsenates, antimonates, selenates, bismuthinates]23
38 : Ophiolites21