Scientific data near [39.68000,-121.56000]

Search area extends approximately 8.9 km east-west and 11.6 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Butte	county
California	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Cherokee	quadrangle 1:24,000 scale
Chico	quadrangle 1:100,000 scale
Chico	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
North Fork Feather	hydrologic unit
Lower Sacramento	hydrologic accounting unit
Sacramento	hydrologic subregion
California	hydrologic region

Geology of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format

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Unit	State	Lithology
Eocene nonmarine rocks, unit 1 (Northern and Central California)	CA	Eocene
Upper Cretaceous marine rocks, unit 1 (Upper Great Valley Sequence)	CA	Late Cretaceous
Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains)	CA	Jurassic
Paleozoic marine rocks, undivided, unit 6 (Northwestern Sierra Nevada)	CA	Permian(?) to Jurassic(?)
Paleozoic metavolcanic rocks, unit 3 (Northwestern Sierra Nevada)	CA	Permian to Jurassic
Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range)	CA	Tertiary (2-24 Ma)

Airborne geophysical surveys

Aerial surveys of magnetic anomaly and gamma ray emission; older surveys were analog record which have been digitized, newer surveys collected data in digital form.

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ID	Data type	Description
North Sierra Foothills	M-D	North Sierra Foothills 8481 line km with spacing 0.80 km over parts of CA
Chico	M/R-D	Chico 4869 line km with spacing 4.80 km over parts of CA-NV
ChicoSouth	M-D	ChicoSouth -9999 line km with spacing 0.80 km over parts of CA
Sacramento 2011	M-D	Sacramento 2011 -9999 line km with spacing 0.80 km over parts of CA

Estimates of undiscovered mineral resources

National Mineral Resource Assessment 1998: Estimates of the number of undiscovered mineral resources of gold, silver, copper, lead, and zinc within identified permissive tracts (geographic areas in which mineral deposits may form).

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Tract	Deposit Type	Mineralization age
PC03	Skarn Cu	Mesozoic
PC03	Skarn Cu	Mesozoic
PC08	Porphyry Cu	Mesozoic
PC17	Massive sulfide, Sierran kuroko	Jurassic
PC26	Epithermal vein, quartz-adularia	Tertiary
PC28	Hot-spring Au-Ag	Tertiary
PC40	Low-sulfide Au-quartz vein	Mesozoic

The continental crust

Seventy-seven major components of the North American continent were delineated at a general scale (1:5,000,000); including the general composition, geological environment, and types of primary metals endowments that can be expected in each domain.

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Domain	Crust type	Region
Foothills-Wallowa	Oceanic arc	Western Cordillera

Asbestos mines, prospects, and occurrences in the US

Location and mineralogical characteristics of former mines, prospects, and occurrences of asbestos in the continental US. No asbestos producing mines are currently active. Data here are drawn from several previously published reports.

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Deposit name	Deposit type	Location
unnamed occurrence	occurrence	Butte, CA

Podiform chromite deposits

Location and characteristics of 1,124 individual mineral deposits of this type, with grade and tonnage models for chromium as well as several related elements.

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Record	Type	Comment
Green Ridge Claim
Hendricks No. 2
Taylor Property
Park's Ranch

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

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Sample ID	Rock type	Rock name
D239720	igneous	unknown

Mineral Resource Data System

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.

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Site name	Development	Commodities
Park's Ranch Mine	Past Producer	CR
Cherokee Mine	Past Producer	AU GEM_D PGE_PT
Park's Ranch Mine	Past Producer	SB CR FE
Hendricks No. 2 Occurrence	Past Producer	CR
Park's Ranch Mine	Producer	CR
Green Ridge Claim	Past Producer	CR
Taylor Property	Occurrence	CR
J. G. Curtis Property Parke's Ranch Mine	Occurrence	CR
Parks	Occurrence	CR
Arlington No. 1 Formerly Hodapp Or Curtis	Occurrence	LST
St. Clair Mine Hydraulic Vinton	Occurrence	GYP AU
Cherokee and Morris Ravine Placer Mines	Occurrence	GEM
Lashboughand Foley Properties	Producer	MN
Jack and Jim Mine	Past Producer	AU
Unnamed Location	Unknown	AU
Reported Occurrence	Occurrence	AU
Welch Hydraulic Mine	Occurrence	AU
Unknown	Occurrence	AU
Reported Lode	Occurrence	AU
New Era Mine	Occurrence	AU
Cherokee Placer	Producer	AU
Hendricks No 2	Unknown	CR
Reported Lode	Occurrence	AU
Wilson Limestone	Unknown	STN_C
Reported Placer	Occurrence	AU
Parks Ranch Mine	Past Producer	CR
Reported Lode	Occurrence	AU SDG
Reported Lode	Occurrence	AU
Taylor Property	Occurrence	CR
Arlington No 2	Occurrence	STN_C
Pentz Pit	Producer	SDG
Wannasha	Past Producer	AU
Jackpot	Unknown	AU
Green Ridge Claim	Past Producer	CR FE
Lyte	Past Producer	AU AG
Marysville Limestone	Occurrence	STN_C
Venus Quartz	Past Producer	AU
Reported Placer	Occurrence	AU
Welch Hydraulic Mine	Unknown	AU
Arlington No 5	Unknown	STN_C
Cherokee Placer	Past Producer	AU
Dredge Tailings	Past Producer	AU
Parrish	Unknown	STN_C
Blum Placer Mine	Unknown	AU
Arlington No 3	Unknown	STN_C
Arlington No 4	Unknown	STN_C
Pentz Marble	Unknown	LST_D MBL
Arlington No 1	Past Producer	STN_C
Toleration	Past Producer	AU
Coleman Ranch	Past Producer	AU AG
Wannasha	Occurrence	AU
Miller Property	Past Producer	AU AG
Cherokee and Morris Ravine Plcr Mns	Unknown	ABR
New Era Mine	Past Producer	AU
St Clair Mine	Unknown	AU GYP
Smithwick and Noble Deposits	Producer	MN
Unknown	Occurrence	AU
Reported Occurrence	Unknown	AU

An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases (web-accessible database)

A compendium of references to previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. These data show where to obtain more detailed information about each deposit or occurrence.

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Deposit name	Deposit type	Location
Green Ridge Claim	Past Producer	California, United States
Park\'s Ranch Mine	Producer	California, United States
Park\'s Ranch Mine	Past Producer	California, United States
Hendricks No. 2 Occurrence	Past Producer	California, United States
Hendricks No 2	unclassified	California, United States
Green Ridge Claim	Past Producer	California, United States
Suzy Bell Lucky Strike Mine	Producer	California, United States
Parks Ranch Mine	Past Producer	California, United States
Park\'s Ranch Mine	Past Producer	California, United States
Parks	Occurrence	California, United States
Taylor Property	Occurrence	California, United States
J. G. Curtis Property Parke\'s Ranch Mine	Occurrence	California, United States
Taylor Property	Occurrence	California, United States

Active mines and mineral plants in the US

Mine plants and operations for commodities monitored by the National Minerals Information Center of the USGS. Operations included are those considered active in 2003 and surveyed by the USGS.

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Record	Type	Comment
Table Mountain Quarry (#231)

Global assessment of undiscovered copper resources

Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

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Tract name	Deposit type	Geology
Cascade Arc	porphyry copper	U.S. part of a continental margin arc that formed during subduction of the Pacific and Juan de Fuca plates beneath western North America
Sierran Arc	porphyry copper	A composite island-continental margin arc that formed during subduction of the Farallon Plate beneath western North America
Western U.S. and Sonoran Desert Jurassic Arc	porphyry copper	U.S. and Mexican parts of a composite island-continental margin arc that formed during subduction of the Farallon Plate beneath western North America

Prospect- and mine-related features on USGS topographic maps

Symbols indicating mining-related features digitized from historical USGS topographic maps in the western part of the conterminous US. Includes prospect pits, mine shafts and adits, quarries, open-pit mines, tailings piles and ponds, gravel and borrow pit

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Feature ID	Feature type	Feature name
Mine Shaft	point
Mine Shaft	point	Cherokee Placer Mine
Placer Mine	point	Cherokee Placer Mine
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Adit	point
Adit	point	New Era Mine
Open Pit Mine	point	New Era Mine
Adit	point	Cape Horn Mine
Adit	point
Adit	point
Gravel Pit	polygon
Gravel Pit	polygon
Placer Mine	polygon	Cherokee Placer Mine
Gravel Pit	polygon
Tailings - Dredge	polygon
Tailings - Undifferentiated	polygon
Tailings - Undifferentiated	polygon
Tailings - Undifferentiated	polygon