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Predictive Mineralogy

Possible unrecorded species at Allamakee County, Iowa, USA

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
ChalcopyriteCuFeS279.55%Anglesite (58.14 %), Galena (56.79 %), Marcasite (63.89 %), Pyrite (51.72 %), Siderite (51.43 %), Sphalerite (63.80 %)
MalachiteCu2(CO3)(OH)240.27%Anglesite (50.35 %)

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

Unique: Sauconite
100
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]

Unique: Smithsonite
100
50 : Coal and/or oil shale minerals4
54 : Coal and other mine fire minerals (see also #51 and #56)4
45b : Oxidized fumarolic minerals (see also [#11]) - [Other oxidized fumarolic minerals]3
47h : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface oxidized, dehydrated minerals]2
45a : Oxidized fumarolic minerals (see also [#11]) - [Sulfates, arsenates, selenates, antimonates]2
47b : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Sulfates and sulfites]2
57 : Other minerals formed by human processes2
49 : Oxic cellular biomineralization (see also #44)1
53 : Other minerals with taphonomic origins1
55 : Anthropogenic mine minerals1