Devils Head Pegmatite District

Producer in Douglas county in Colorado, United States with commodities Feldspar, Quartz, Gemstone, Niobium (Columbium), Thorium, Beryllium, REE, Tin

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Public Land Survey System information
Commodities
Materials information
Host and associated rocks
Nearby scientific data
Geologic structures
Economic information about the deposit and operations
Mining district
Land status
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10107991
MRDS ID	D010362
Record type	District
Current site name	Devils Head Pegmatite District

Geographic coordinates

Geographic coordinates:	-105.10113, 39.26056 (WGS84)
Elevation	2591
Relative position	12 TO 19 MILES SOUTHWEST OF CASTLE ROCK

Site location context

Political divisions (FIPS codes)

Douglas(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Devils Head(quadrangle 1:24,000 scale)

Bailey(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper South Platte(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Pike and San Isabel National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country	State	County
United States	Colorado	Douglas

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
6th Principal	008S;009S;010S;010S	069W;069W;068W;069W	35;01,07,09,10,12,21,36;07,19;12,25		Colorado

Comments on the location information

MINES GENERALLY FOUND ALONG CREST OF RAMPART RANGE AROUND PROMINENT TOPOGRAPHIC FEATURE, DEVILS HEAD. MINES ALSO LOCATED ON DEVILS HEAD AND DECKERS QUADS. NONMETALLIFEROUS PEGMATITE QUARRIES LOCATED IN SEC. 18, T9S, R68W, SEC. 6, T1OS, R68W, AND SECS. 13 AND 23, T1OS, R69W. LAT-LONG GIVEN FOR DISTRICT IS FOR DEVILS HEAD (SECS. 15 AND 22, T9S, R69W). ; INFO FROM LAND.ST :(1974)

Commodities

Commodity	Importance
Feldspar	Primary
Quartz	Primary
Gemstone	Secondary
Niobium (Columbium) Critical	Tertiary
Thorium	Tertiary
Beryllium Critical	Tertiary
REE Critical	Tertiary
Tin Critical	Tertiary

Materials information

Materials	Type of material
Microcline	Ore
Quartz	Ore
Allanite	Gangue
Biotite	Gangue
Cassiterite	Gangue
Cleavelandite	Gangue
Euxenite	Gangue
Fluorite	Gangue
Garnet	Gangue
Monazite	Gangue
Parisite	Gangue
Pyrochlore	Gangue
Xenotime	Gangue

Host and associated rocks

Host or associated Associated

Rock type Plutonic Rock > Pegmatite

Stratigraphic age (youngest) Neoproterozoic

Stratigraphic age (youngest) Neoproterozoic

Host or associated	Associated
Rock type	Plutonic Rock > Granitoid > Granite
Rock unit name	Pikes Peak Granite;Pegmatite
Rock description	Pikes Peak Granite;Pegmatite

Host or associated	Host
Rock type	Plutonic Rock > Granitoid > Granite
Rock unit name	Pikes Peak Granite;Pegmatite
Rock description	Pikes Peak Granite;Pegmatite

Nearby scientific data

(1)	-105.10113, 39.26056	ListMap

Economic information

Geologic structures

Type of structure	Regional
Structure description	Front Range Uplift, Pikes Peak Batholith, Rampart Range Uplift
Type of structure	Local
Structure description	Perry Park-Jarre Canyon Fault, Rampart Range Fault, Manitou Half Graben

Economic information about the deposit and operations

Development status	Producer
Commodity type	Both
Deposit size	Small
Significant	No
Year of first production	1930
Year of last production	1970

Mining district

District name	Devils Head Pegmatite District

Land status

Ownership category	National Forest

Comments on the workings information

OPEN CUTS, MOST FACES WORKED ON BENCHES

Comments on development

FELDSPAR QUARRIES OPENED IN 1930S WITH SPORADIC PRODUCTION FOR GLASS AND CERAMIC MANUFACTURE. LATER MINOR PRODUCTION OF WHITE QUARTZ FOR DECORATIVE STONE. INTERMITTENT COLLECTING OF TOPAZ AND AMAZONITE SPECIMENS.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	D010362

Bibliographic references

Deposit

MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 24-25.
Deposit

BRYANT, BRUCE, AND OTHERS, 1981, GEOLOGIC MAP OF THE DENVER 1X2 QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP
Deposit

HEINRICH, E.W., 1957, PEGMATITE PROVINCES OF COLORADO: COLORADO SCHOOL MINES QUART, V. 52, NO. 4, P. 1-22.
Deposit

TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP I-857-F. &&
Deposit

HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 31-32.

General comments

Subject category	Comment text
Deposit	DETAILED RECORDS PREPARED FOR QUARRIES PRODUCING FELDSPAR AND QUARTZ AND REPORTING OTHER METAL OCCURRENCES (RAE, BE, MON, NB, TH, SN): CALIFORNIA, CRAMER, CRAMER NO. 2, DENVER, DEVILS HEAD PROSPECT, LITTLE EDDY, LONE PINE, LOST DUTCHMAN, MILLER LODE, PRINCETON GROUP, SKELETON NO. 2, SPIELMAN, THREE MUSKETEERS, WATSON PARK. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit	DISTRICT CONTAINS SMALL ZONED AND UNZONED PEGMATITES WITH OUTER ZONES OF GRAPHIC GRANITE GRADING INTO GRANITE WALLROCK, INTERMEDIATE ZONES OF QUARTZ-PLAGIOCLASE-BIOTITE, AND CENTRAL ZONES OR CORES OF QUARTZ. MAJOR MINERALS INCLUDE MICROCLINE, QUARTZ, TOPAZ, AND KAOLINITE; MINOR ACCESSORIES INCLUDE FLUORITE AND CLEAVELANDITE; RARE ACCESSORIES INCLUDE BERYL, YTTROFLUORITE, ALLANITE, EXNOTIME, EUXENITE, MONAZITE, PYROCHLORE, AND THORITE.

Subject category

Comment text

Deposit

DETAILED RECORDS PREPARED FOR QUARRIES PRODUCING FELDSPAR AND QUARTZ AND REPORTING OTHER METAL OCCURRENCES (RAE, BE, MON, NB, TH, SN): CALIFORNIA, CRAMER, CRAMER NO. 2, DENVER, DEVILS HEAD PROSPECT, LITTLE EDDY, LONE PINE, LOST DUTCHMAN, MILLER LODE, PRINCETON GROUP, SKELETON NO. 2, SPIELMAN, THREE MUSKETEERS, WATSON PARK. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Deposit

DISTRICT CONTAINS SMALL ZONED AND UNZONED PEGMATITES WITH OUTER ZONES OF GRAPHIC GRANITE GRADING INTO GRANITE WALLROCK, INTERMEDIATE ZONES OF QUARTZ-PLAGIOCLASE-BIOTITE, AND CENTRAL ZONES OR CORES OF QUARTZ. MAJOR MINERALS INCLUDE MICROCLINE, QUARTZ, TOPAZ, AND KAOLINITE; MINOR ACCESSORIES INCLUDE FLUORITE AND CLEAVELANDITE; RARE ACCESSORIES INCLUDE BERYL, YTTROFLUORITE, ALLANITE, EXNOTIME, EUXENITE, MONAZITE, PYROCHLORE, AND THORITE.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-MAR-83	Schwochow, Stephen D.	Colorado Geological Survey
Editor	16-NOV-11	Wilson, Anna B	U.S. Geological Survey	Changed record type from site to district.

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Colorado resources

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