Predictive Mineralogy

Possible unrecorded species at Pu´u Mahanaluanui trachyte dome, Lahaina, Maui Island, Maui County, Hawaii, 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
Quartz	SiO₂	89.52%	Albite (78.81 %), Magnetite (50.54 %)
Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂	52.79%	Albite (52.80 %)

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
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)	50
26 : Hadean detrital minerals	50
19 : Granitic intrusive rocks	50
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)	50
51 : Pyrometamorphic minerals (see also #54 and #56)	46
35 : Ultra-alkali and agpaitic igneous rocks	46
7 : Ultramafic igneous rocks	46
36 : Carbonatites, kimberlites, and related igneous rocks	45
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)	41
4 : Primary chondrule phases	9