Predictive Mineralogy

Possible unrecorded species at Jefferson Island (Lake Peigneur Sulphur mine; Cote Caroline), Iberia Parish, Louisiana, USA

This table is based on statistical analysis of other localities containing similar species to the ones found at this locality.

Possible missing species	Formula	Match %	Due to recorded presence of
Chalcopyrite	CuFeS₂	66.05%	Marcasite (63.89 %), Pyrite (51.72 %)
Sphalerite	ZnS	52.68%	Marcasite (65.85 %)
Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂	51.80%	Kaolinite (51.81 %)
Galena	PbS	46.98%	Marcasite (58.73 %)

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 Mode	Score
24 : Authigenic minerals in terrestrial sediments (see also #17)	50
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits	46
25 : Evaporites (prebiotic)	8
21 : Chemically precipitated carbonate, phosphate, iron formations	7
45b : Oxidized fumarolic minerals (see also [#11]) - [Other oxidized fumarolic minerals]	7
5 : Primary asteroid phases	6
54 : Coal and other mine fire minerals (see also #51 and #56)	4
50 : Coal and/or oil shale minerals	4
49 : Oxic cellular biomineralization (see also #44)	4
53 : Other minerals with taphonomic origins	3