Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Pacheco Pass, Diablo Range, Santa Clara Co., California, USA

mindat Locality ID: 227434
mindat URL: http://www.mindat.org/loc-227434.html

Tectonic Settings:

Total number of sublocalities beneath "Pacheco Pass, Diablo Range, Santa Clara Co., California, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Pacheco Pass Area
Road West Of The Pacheco Pass Summit
Unnamed Albite Occurrence [1]

Latitude: 37°2'43"N
Longitude: 121°16'24"W
Decimal Degree (lat, lon): 37.045277777778,-121.27333333333

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amphibole	Aragonite	Clay	Feldspar	Lawsonite	None	Pyroxene	Quartz	Stibnite	Stilpnomelane

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ba C Ca Fe H K Mg Na O S Sb Si

Elements from minerals reported directly at this locality: Al Fe H Mg Na O Si

Structural Groups for minerals in this locality:
Amphibole Aragonite Clay Feldspar Lawsonite None Pyroxene Quartz Stibnite Stilpnomelane

10 IMA Minerals at location:

Albite ()*	Aragonite ()*	Cymrite ()*	Glaucophane ()*	Howieite ()*
Jadeite ()*	Lawsonite ()*	Quartz ()*	Stibnite ()*	Stilpnomelane ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	176137	8803
Aragonite ()*	Aragonite	Ca(CO₃)	1	176135	3250
Cymrite ()*	None	Ba(Si,Al)₄(O,OH)₈·H₂O	1	176136	46
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	1	176135	286
Howieite ()*	None	Na(Fe²⁺,Fe³⁺,Al,Mg)₁₂(Si₆O₁₇)₂(O,OH)₁₀	0		16
Jadeite ()*	Pyroxene	NaAlSi₂O₆	1	176136	154
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O	2	176135,176136	121
Quartz ()*	Quartz	SiO₂	0		61156
Stibnite ()*	Stibnite	Sb₂S₃	1	176135	3418
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	1	176135	456

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...