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:
Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA

Oldest recorded age at locality: 1409
Youngest recorded age at locality: 138

mindat Locality ID: 219858
mindat URL: http://www.mindat.org/loc-219858.html

Tectonic Settings:

Total number of sublocalities beneath "Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA": 12
Total number of bottom-level sublocalities: 12

Number of Child Localities: 12
Child Localities:
Pacific Slate Company Quarry
Silver Bar Nos. 2; 3; 4 Prospect
Unknown Stone Deposit [2]
Unnamed Alunite Occurrence [1]
Unnamed Andalusite Occurrence [1]
Unnamed Au Occurrence [18]
Unnamed Placer Au Mine [45]
Unnamed Placer Au Property [48]
Unnamed Pyrophyllite Occurrence [1]
Unnamed Serpentine Occurrence [1]
Waltz Property [1]
Waltz Property [2]

Latitude: 37°24'53"N
Longitude: 120°14'54"W
Decimal Degree (lat, lon): 37.414722222222,-120.24833333333

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.

Andalusite	Clay	Copper	None	Pyrophyllite	Quartz

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 Au H K O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Andalusite Clay Copper None Pyrophyllite Quartz

5 IMA Minerals at location:

Alunite ()*	Andalusite ()*	Gold ()*	Pyrophyllite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	1	163363	966
Andalusite ()*	Andalusite	Al₂SiO₅	1	163364	1310
Gold ()*	Copper	Au	2	163365,163366	30554
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	1	163368	771
Quartz ()*	Quartz	SiO₂	1	163368	61156

21 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-U-Th-Pb-02591_206_238	146	146	146	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02591_207_206	155	143	149±6	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02591_207_235	146	146	146	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02592_206_238	145	145	145	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02592_207_206	155	141	148±7	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02592_207_235	145	145	145	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02593_206_238	162	162	162	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02593_207_206	554	546	550±4	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02593_207_235	189	189	189	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02594_206_238	138	138	138	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02594_207_206	177	165	171±6	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02594_207_235	140	140	140	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02595_206_238	149	149	149	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02595_207_206	337	329	333±4	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02595_207_235	161	161	161	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02596_206_238	190	190	190	206_238	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02596_207_206	769	763	766±3	207_206	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02596_207_235	241	241	241	207_235	age of intrusion	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02611_206_238	465	465	465	206_238	age not evaluated	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02611_207_206	1409	1407	1408±1	207_206	age not evaluated	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02611_207_235	662	662	662	207_235	age not evaluated	zircon	Zircon	249957	Waltz Property [2], Three Buttes (Tres Cerritos), Hornitos District, West Belt, Mariposa Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...