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Predictive Mineralogy

Possible unrecorded species at Brønnebukta, Siktesøya, Porsgrunn, Telemark, Norway

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
QuartzSiO299.99%Albite (78.81 %), Astrophyllite (50.64 %), Calcite (62.43 %), Chalcopyrite (67.26 %), Diaspore (52.78 %), Epididymite (51.90 %), Ferrokentbrooksite (50.00 %), Fluorite (66.12 %), Gaidonnayite (51.52 %), Galena (65.16 %), Hambergite (63.16 %), Helvine (71.27 %), Hilairite (66.67 %), Löllingite (76.36 %), Magnetite (50.54 %), Microcline (81.52 %), Molybdenite (66.37 %), Montmorillonite (65.62 %), Muscovite (80.32 %), Nordstrandite (57.69 %), Opal (60.07 %), Polylithionite (66.67 %), Pyrite (67.27 %), Pyrophanite (64.31 %), Sphalerite (67.53 %), Wulfenite (63.76 %), Zircon (64.02 %)
FluorapatiteCa5(PO4)3F99.47%Catapleiite (51.57 %), Epididymite (51.90 %), Ferrokentbrooksite (56.25 %), Gaidonnayite (63.64 %), Hilairite (62.50 %), Kupletskite (62.50 %)
EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)298.89%Catapleiite (52.83 %), Ferrokentbrooksite (56.25 %), Gaidonnayite (57.58 %), Hilairite (54.17 %), Kupletskite (72.50 %)
TitaniteCaTi(SiO4)O98.87%Catapleiite (50.94 %), Ferrokentbrooksite (50.00 %), Gaidonnayite (60.61 %), Hilairite (70.83 %), Kupletskite (60.00 %)
ArsenopyriteFeAsS90.19%Berborite (71.43 %), Löllingite (65.68 %)
IlmeniteFe2+TiO389.97%Ferrokentbrooksite (56.25 %), Hilairite (54.17 %), Kupletskite (50.00 %)
HematiteFe2O387.99%Berborite (50.00 %), Böhmite (51.98 %), Nordstrandite (50.00 %)
ThoriteTh(SiO4)71.97%Berborite (50.00 %), Ferrokentbrooksite (56.25 %), Hilairite (54.17 %)
BehoiteBe(OH)264.28%Berborite (64.29 %)
CerussitePbCO358.77%Wulfenite (58.77 %)
BertranditeBe4(Si2O7)(OH)257.14%Berborite (57.14 %)
Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O57.14%Berborite (57.14 %)
Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O57.14%Berborite (57.14 %)
PyrrhotiteFe1-xS54.54%Gaidonnayite (54.55 %)
PectoliteNaCa2Si3O8(OH)51.51%Gaidonnayite (51.52 %)
Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)250.00%Kupletskite (50.00 %)
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2O50.00%Berborite (50.00 %)
Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O50.00%Berborite (50.00 %)
Bastnäsite-(Ce)Ce(CO3)F45.71%Berborite (57.14 %)
Ancylite-(Ce)CeSr(CO3)2(OH) · H2O43.33%Hilairite (54.17 %)
Monazite-(Ce)Ce(PO4)40.00%Hilairite (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: Astrophyllite, Catapleiite, Ferrokentbrooksite, Hilairite, Kupletskite, Leucophanite
661
34 : Complex granite pegmatites

Unique: Hambergite, Polylithionite
223
48 : Soil leaching zone minerals

Unique: Gibbsite
125
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]

Unique: Nordstrandite
105
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]

Unique: Wulfenite
100
19 : Granitic intrusive rocks28
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)27
36 : Carbonatites, kimberlites, and related igneous rocks17
31 : Thermally altered carbonate, phosphate, and iron formations8
9 : Lava/xenolith minerals (hornfels, sanidinite facies)4
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)4
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])4
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]4
6 : Secondary asteroid phases3
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)2