Predictive Mineralogy

Possible unrecorded species at Guadalupe Mine, New Almaden, New Almaden Mining District, Santa Clara County, California, 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
Clausthalite	PbSe	57.54%	Tiemannite (57.55 %)
Hematite	Fe₂O₃	51.88%	Tiemannite (51.89 %)

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
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) Unique: Metacinnabar, Tiemannite	100
53 : Other minerals with taphonomic origins	4
47c : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Carbonates, phosphates, borates, nitrates]	4
47a : Low-𝑇 subaerial oxidative hydration, weathering (see also #16 and #23) - [Near-surface hydration of prior minerals]	4
6 : Secondary asteroid phases	2
14 : Hot springs, geysers, and other subaerial geothermal minerals	2
54 : Coal and other mine fire minerals (see also #51 and #56)	1
50 : Coal and/or oil shale minerals	1
37 : Layered igneous intrusions and related PGE minerals	1
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)	1
11 : Volcanic fumarole minerals; reduced phases (see also #45)	0