Scientific data near [39.85000,-105.30000]

Search area extends approximately 4.5 km east-west and 5.8 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Jefferson	county
Colorado	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Ralston Buttes	quadrangle 1:24,000 scale
Denver West	quadrangle 1:100,000 scale
Denver	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Clear	hydrologic unit
South Platte	hydrologic accounting unit
South Platte	hydrologic subregion
Missouri	hydrologic region

Geology of US states

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

Database Home

Unit	State	Lithology
Lykins Lyons and Fountain Fms	CO	Triassic-Pennsylvanian
Biotitic gneiss, schist, and migmatite	CO	Early Proterozoic
Felsic and hornblendic gneisses, either separate or interlayered	CO	Early Proterozoic
Granitic rocks of 1700-m.y. age group	CO	Early Proterozoic

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.

Database Home

ID	Data type	Description
Rocky Flats ARMS	M-A	Rocky Flats ARMS 10621 line km with spacing 1.60 km over parts of CO
North Park-Central City 67	M-A	North Park-Central City 67 7475 line km with spacing 1.60 km over parts of CO
Denver	M/R-D	Denver 8996 line km with spacing 1.60 km over parts of CO

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).

Database Home

Tract	Deposit Type	Mineralization age
CR08	Porphyry Cu	Laramide
CR11	Porphyry Cu-Au	Laramide
CR09	Porphyry Cu	Middle Tertiary
CR20	Alkaline Au-Te	Laramide

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.

Database Home

Domain	Crust type	Region
Great Plains	Lateral-extensional orogen	Central and Southwest

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"

Database Home

Sample ID	Rock type	Rock name
D227427	metamorphic
D227428	metamorphic
D227429	metamorphic
D227431	metamorphic	schist
D227432	metamorphic	schist
D227434	metamorphic
D227435	metamorphic
D227437	metamorphic	quartzite
D227438	metamorphic	quartzite
D227440	metamorphic
D227441	metamorphic
D227444	metamorphic
D227445	metamorphic
D227566	metamorphic	quartzite
D227568	metamorphic
D227569	metamorphic
D227570	metamorphic
D227773	metamorphic
D227774	metamorphic
D227775	metamorphic
D227776	metamorphic
D227778	metamorphic
D227779	metamorphic
D227783	metamorphic
D227784	metamorphic
D227786	metamorphic
D227787	metamorphic
D227789	metamorphic
D227790	metamorphic
D228230	metamorphic
D228231	metamorphic
D228232	metamorphic
D228234	metamorphic
D228235	metamorphic
D228237	metamorphic	schist
D228238	metamorphic	schist
D228240	metamorphic
D228241	metamorphic
D228243	metamorphic
D228244	metamorphic
D228245	metamorphic
D228247	metamorphic
D228248	metamorphic
D228250	metamorphic
D228251	metamorphic
D228252	metamorphic
D228253	metamorphic
D228255	metamorphic
D228256	metamorphic
D228260	metamorphic
D231760	metamorphic
D231761	metamorphic
D231763	metamorphic
D231764	metamorphic
D231765	metamorphic	gneiss
D231766	metamorphic	schist
D231768	metamorphic
D231769	metamorphic
D231771	metamorphic
D231772	metamorphic
D231773	metamorphic	quartzite
D231777	metamorphic
D231779	metamorphic
D231781	metamorphic
D231783	metamorphic
D231785	metamorphic
D231787	igneous	pegmatite
D231788	igneous	pegmatite
D231789	metamorphic
D231790	metamorphic
D231795	metamorphic
D231796	metamorphic
D231797	metamorphic
D231798	metamorphic
D231799	metamorphic
D231800	metamorphic
D231804	metamorphic
D231805	metamorphic
D257730	metamorphic	QUARTZITE
D257734	metamorphic	schist
D257735	metamorphic	schist
D257738	metamorphic	schist
D257740	metamorphic	gneiss
D276346	metamorphic	gneiss
D276347	metamorphic	gneiss
D276348	metamorphic	gneiss
D276349	metamorphic	gneiss
D276350	metamorphic	gneiss
D276351	metamorphic	gneiss
D276352	metamorphic	gneiss
D276353	metamorphic	gneiss
D276354	metamorphic	gneiss
D276355	metamorphic	gneiss
D276363	metamorphic	quartzite
D276364	metamorphic	schist
D276366	metamorphic	schist
D276370	metamorphic	gneiss
D276371	metamorphic	gneiss
D276372	metamorphic	gneiss
D276373	metamorphic	gneiss
D276374	metamorphic	gneiss
D276375	metamorphic	gneiss
D276376	metamorphic	metagranodiorite
D276377	metamorphic	gneiss
D276378	metamorphic	metagranodiorite

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.

Database Home

Site name	Development	Commodities
Schwartzwalder Mine	Past Producer	U MO CU PB ZN BI
Ralston Buttes District	Producer	U CU MO ZN PB AG AU BI MN NI CO
North Star Mine	Past Producer	CU U PB ZN AG
Mena Mine	Past Producer	U CU NI PB BI ZN AG MO FE
Sec 36 T2s R71w N 1/2	Prospect	U
Hoffmeister Uranium Prospect	Producer	U

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.

Database Home

Deposit name	Deposit type	Location
Ralston Buttes District	Producer	Colorado, United States
Mena Mine	Past Producer	Colorado, United States

National Geochronological Database

Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.

Database Home

Sample ID	Sample source	Rock name
7245	Mine	Vein
7246	Mine	Vein
7247	Mine	Pegmatite
7248	Outcrop or artificial surface exposure	Pegmatite

National Geochemical Database: Soil

Geochemical analysis of soil samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
D162208	grassland/grazing land
D162269	grassland/grazing land
D203165	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203166	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203167	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203168	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203169	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203170	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203171	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203172	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203173	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN
D203174	forest/scattered timberland	SAND-SILT FROM SOIL OVER VEIN

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.

Database Home

Tract name	Deposit type	Geology
Eastern Alkaline Province	porphyry copper	A belt of Tertiary alkaline granitic rocks associated with back-arc or postsubduction extension
Tertiary Central Plateau and Rocky Mountains	porphyry copper	Belt of middle Tertiary (Oligocene-Miocene) granitic to intermediate intrusive rocks & volcanics associated w/post-Laramide stage of magmatism in northern Mexico and Mid-Tertiary volcanic fields associated w/post-subduction extension in eastern Rocky Mtns

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

Database Home

Feature ID	Feature type	Feature name
Mine Shaft	point
Adit	point	Mine
Adit	point
Adit	point
Adit	point	Schwartzwalder Mine
Adit	point
Tailings - Undifferentiated	polygon