👁 Image
| | Report (issue) | | D
HOw AN
WHERE
JR.|
[BY BEN H. PARKER,
ADO
R
O
COL
CAL
I
G
O
L
(,EO
EY
SURV
Department
of Natural...Natural
Resources
Denver, Colorado/ 2009
NOa
COVER CREDITS
Design: Larry Scott
Front cover:
Turtle Nugget:...collection, Colorado Historical Society (see page 16)
ISBN: 978-1-884216-23-7
Colorado Geological Survey...koom?/ 15
Denver, CO. 80203
(303) 866-2611
Colorado Geological Survey
Information Series 33
GOLD...GOLD
PANNING
AND
PLACERING
622.342 P238
IN COLORADO
How
AND WHERE
=e
race
Drawings and maps drafted | 👁 Image
| | Journal (article/letter/editorial) | | Two
Point claim, Pikes Peak
batholith, Teller County.
The Collector’s Edge
specimen, Jeff Scovil
photo...Mail Stop 150, Box 25046
Federal Center
Denver, Colorado 80225
pmodreski@usgs.gov
C
olorado is, of course...been written as guides to mineral
collecting in Colorado. A classic, which went through three
major editions...1951 version with a slightly different title), is Colorado Gem
Trails and Mineral Guide, by Pearl (1951,...up-to-date guidebook to the state’s minerals is Colorado Rockhounding, by Voynick (1994). Other
published | 👁 Image
| | Journal (article/letter/editorial) | | SCHEELITE
IN THE
PRECAMBRIAN
OGDEN
GNEISSES
OF COLORADO
TWETO
CONTENTS
PAGE
Abstract .............................................................
Tarryall Springs district ...............................Precambrian age has been found at several localities in
Colorado and Wyoming in recent years. Most of it is disseminatedin...Geological Survey.
SCHEELITE
IN GNEISSES OF COLORADO
I NTRODUCTIO
1407
N
ß
SCaEEL•TEwas discoveredin...occurrenceat many localitiesin the Precambrianterranesof Colorado
and part of Wyoming, show that during the Precambrian | 👁 Image
| Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey
Denver, Colorado
Department of Geology,
Denver Museum of Natural History
Denver, Colorado
NOTE FOR...revision of U.S.G.S. Bulletin 1114,
Minerals of Colorado A 100 year record, by Edwin B. Eckel
By
Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar,
and the Denver Museum of Natural History...references dealing with the mineralogy of the state
of Colorado. It is part of a more than 10 year effort to update...and revise
U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B.
Eckel (1961). | 👁 Image
| | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite
or amazonite,
the many varieties and associations...a k e w o o d , Colorado 80225
DIANNE L. K I L E
333 S a l e m Street
Aurora, Colorado 80011
C O L O...and J. A. Mur
phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961).
374
ROCKS...
Quartz was a familiar gemstone to many early Colorado
residents, as documented by an extensive body...body of literature.
The first published list of Colorado mineral localities (in
cluding quartz) was included | 👁 Image
| | Report (issue) | | INTRUSIVE ROCKS OF COLORADO
By Edward J. Young
Prepared in cooperation with
The Colorado Mining Industrial...Industrial Development Board
and the
Colorado Geological Survey
This report is preliminary and has not been...intrusive rocks of Colorado
»
»
» *«»
In pocket
Laramide-Tertiary intrusive rocks of Colorado
By Edward...Laramide-Tertiary intrusive rocks in the State of Colorado, geologic age
localities, mining districts, localities...This information is shown on the State map of Colorado (scale 1:500,000)
accompanying this report.
In | 👁 Image
| | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma
District, Central Colorado: the porphyry
molybdenum–fluorine...hrosite–fluorite in the Sweet
Home Mine, Alma District, Colorado were originally mined
for silver starting...For the last 13 years up until
2004, however, the mine has produced world-class rhodochrosite specimens...the nearby area; (4) a small pegmatite within the mine with
an age (25.9±0.3 Ma) coincident with mineralization...Geological Engineering,
Colorado School of Mines,
1516 Illinois Street,
Golden, CO 80401, USA
e-mail: pbartos@mines | 👁 Image
| | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma
District, Central Colorado: the porphyry
molybdenum–fluorine...hrosite–fluorite in the Sweet
Home Mine, Alma District, Colorado were originally mined
for silver starting...For the last 13 years up until
2004, however, the mine has produced world-class rhodochrosite specimens...the nearby area; (4) a small pegmatite within the mine with
an age (25.9±0.3 Ma) coincident with mineralization...Geological Engineering,
Colorado School of Mines,
1516 Illinois Street,
Golden, CO 80401, USA
e-mail: pbartos@mines | 👁 Image
| | Report (issue) | | Agr_______ Agricultural, Agriculture Co_______. Company, County
Akad_____ Akademie
Coll______ Collections
Conini_____...Cleveland, Ohio.
Colorado Mining Association Mining Yearbook 1940-43. Denver, Colo.
Colorado Museum of Natural...2, 3), 12. (no. 1), 18 (no. 1).
Denver, Colo.
Colorado School of Mines: Mines Magazine vols. 32, 33;...vols. 37,
38 and Supplements A, B. Golden, Colo.
Colorado University: Bulletin vols. 42 (no. 17), 43 (no...(nos. 1-6). Mexico, D. F.
Mines Magazine. See Colorado School of Mines.
Mining and Metallurgical Society | 👁 Image
| | Journal (issue) | | Colorado Springs
Mineralogical Society
Founded in 1936
Lazard Cahn
Honorary President
February 2020...of the Western Museum of Mining &
Industry in Colorado Springs. He is currently working
on a study of...gold mines.
COLORADO SPRINGS MINERALOGICAL SOCIETY PO BOX 2 COLORADO SPRINGS, COLORADO 80901-0002
February...Denver Mining Club weekly meeting, Martin Palkovic, Colorado Geological Survey, Cretaceous Sedimentary Bedrock...ReturnFlows to the Arkansas River, Southeastern Colorado. Golden Corral Buffet & Grill, 3677 South Santa | 👁 Image
| | Report (issue) | | National Forest
RARE II and wilderness areas in Colorado
Compiled
By
Robert P. Dickerson 1
Open-File Report...standards and stratigraphic nomenclature.
Denver, Colorado
CONTENTS
(See also indices listings, p. 173)......................................
Springhouse Park (2-184)....................................
Electric............
Poison Park (2-290).........................................
Graham Park (2-291).............Wilderness (NF-170)..............................
Gardner Park (2-171)........................................ | 👁 Image
| | Journal (issue) | | England
Richard C. Erd
U.S. Geological Survey
Menlo Park, CA
Donald R. Peacor
University of Michigan
Ann...R. Kampf
Natural History Museum of
Los Angeles County
George Robinson
National Museums of Canada
Arthur........................203
R. Barnes
Pikes Peak Granite......................................217
B. Muntyan...SPECIMENS from the collection
of the Geology Museum, Colorado
School of Mines. See page 242 for a full
description... All rights reserved.
notes fromthej
EDITOR
COLORADO-III
Here we are with our third special issue devoted | 👁 Image
| Stark, J. T., Johnson, J. H., Behre, C. H. Jr., Powers, W. E., Howland, A. L., Gould, Don B. (1949, January) Geology and Origin of South Park, Colorado. GSA Memoir 33. Geological Society of America doi:10.1130/mem33 | Report (issue) | | America
Memoir 33
GEOLOGY AND ORIGIN
OF
SOUTH PARK, COLORADO
BY
J. T . STARK, J. H. JOHNSON, C. H. BEHRE............... .. .
Physiographic features of the Park proper .................. . . .... ... . .. .. ............ ..... .
Secondary features within the Park ...... ........ . ..... .... . ....................... . ......................... .
Pikes Peak granite . .............. ................ ... . .............................. . ...... .
Silver Plume granite . .............. ..... ......... . . ........ | 👁 Image
| | Journal (article/letter/editorial) | | MICHAEL J. GOBLA
19055 East Bethany Place
Aurora, Colorado 80013
gobla@copper.net
Unless otherwise noted...view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County.
208
ROCKS & MINERALS
Downloaded...mines at Butte in Silver Bow
County and the Black Pine mine in Granite County have
produced many fine crystal...Crystal Park in Beaverhead County, the
pegmatites of Jefferson County, and the Snowbird mine in
Mineral...Mineral County continue to be productive sources of mineral specimens.
The Montana Gold Rush
After giving | 👁 Image
| | Journal (article/letter/editorial) | | drainagebasinarea(km•), C = meanabundanceof
Leadville, Colorado; and the Mother Lode, Califor- heavymineralor...whichsourcerocksare decomtary deposits(Lyden, 1948; Parker, 1974; Boyle, posedconformsto the rate at whichthe...magnitude.
watersranddeposits.
Tarryalldistrict,Colorado
30•1.
Modern
(n:54)
2Oll
[] OrM
Frequency
...1986;Kukal,1990).
ward the Wilsonplacer(Singewald,1950; Parker,
16 2 6
SCIENTIFIC
COMMUNICATIONS
SCIENTIFIC...Pioneerdistrict, Montana
$35/oz Au; Singewald,1950, p. 166; Parker,1974,
plate 19). The two levelsof terrace gravels | 👁 Image
| | Journal (article/letter/editorial) | | Sawatch Ranges, Colorado
BRUCE BRYANT
C. W. NAESER
U.S. Geological Survey, Denver, Colorado
80225
ABSTRACT...and that the east margin of the Paleocene South Park basin
must have been nearby.
Ages in the Sawatch...OF PRECAMBRIAN ROCKS
The Precambrian rocks in Colorado were regionally metamorphosed to high grade and...rock older than 1,850
m.y.
have yet been found in Colorado. About 1,430 m.y. ago,
INTRODUCTION
widespread...years highlands separated by a basin — the central Colorado trough —
(Naeser and Forbes, 1976). In a cooling | 👁 Image
| | Book (volume) | | ...........................................47
Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner
is.
Good...graphite, quartz), and gneisses, as well as
numerous granite pegmatites and ore-bearing veins. Prior to the...gemmy qualities for cutting and
polishing.
AUTAUGA COUNTY
PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.)
BARBOUR COUNTY
BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a | 👁 Image
| | Book (volume) | | ...........................................47
Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner
is.
Good...graphite, quartz), and gneisses, as well as
numerous granite pegmatites and ore-bearing veins. Prior to the...gemmy qualities for cutting and
polishing.
AUTAUGA COUNTY
PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.)
BARBOUR COUNTY
BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a | 👁 Image
| | Report (issue) | | _________________
___.
Nevada ___________
Elko County. - ______ ... _
Star mine, Harrison Pass _____ ____
Pag«
59...63
Good Hope barite mine, Tuscarora
Range _____ _ ._. ________
Humboldt County
Golconda manganese-tungsten...64
64
65
65
65
65
Barium Products Corp., Ltd.,
mine...... --_--______.______
Lincoln County__-__-----_-----_-----___...district____ .________..__
Nevada Scheelite mine.. _ ______
Hooper No. 2 mine __ _____ _ _
Yankee Girl mine_______________...Mountains_____________.____
Desert Scheelite mine..... _______
Gunmetal mine _ ___________ _
Manganese-tungsten | 👁 Image
| | Report (issue) | | Carbonatites
of the Gem Park Complex,
Custer and Fremont Counties,
Colorado
GEOLOGICAL SURVEY PROFESSIONAL...CARBONATITES
OF THE GEM PARK COMPLEX,
CUSTER AND FREMONT COUNTIES,
COLORADO
S a n g re
d a
C r i...Bdj^|*°C,j^B^*' *
X*
-H'c;"",.,,,,'*^
,,' -aCr*
Gem Park, Colo. View northwestward from Democratic Mounta...-Cbtrfplex
ving pyroxenite and gabbro of the Gem Park Complex.
-«
"*» +**
4ifa.
Mafic-Ultramafic...Carbonatites
of the Gem Park Complex,
Custer and Fremont Counties,
Colorado
By RAYMOND L. PARKER and WILLIAM N | 👁 Image
| | Book (volume) | | ...........................................59
Colorado ...............................................................548
Table of Maps
Page
Alabama County Map ...................................................................................4
Alaska County and Stream Map ......................................................................22
Arizona County Map ..................................................................45
Arizona – Yuma Co. Hull Mine Site Map ...................................... | 👁 Image
| | Report (issue) | | S. Geological Survey editorial standards
Menlo Park, California
1985
INTRODUCTION
Placer deposits...column
heading "County/Quad" contains second or third order political units -county, province, or quadrangle...Arizona
United States Cali forni a
United States Colorado
United States Idaho
United States Montana
United...conglomerate
diorite
gabbro
granodiorite
gneiss
granite
greenstone
hornfels
igneous rock
(undifferentiated)...IJiCd
L'irt'
J'M
AUNS
1 1 RE
USHT
AUNS
USCO
USCA
USA*
USID
AUNS
USHT
USAZ
USID
1VCO
USAZ
AUNS
USHT
USHT | 👁 Image
| | Journal (issue) | | Loseyite, Mn4 Zn3 (C·O3) 2(OH) 10 from Franklin
Sussex County, New Jersey: A New Physical Descriptioll
Va·nKlng...fl;11nb11ri:.
H.irdy&tonTowns.hip, S111,s.c.ll:
County, NJ. 11 1 inter• ting 111111
Lo y hrm a mincr...Massive - Granular - Common texture observed in granite and other
igneous rock
Hardness: 6.5 - 7
Habit:...Massive - Granular - Common texture observed in granite and other
igneous rock
Hardness: 6.5 - 7
Luminescence:...texture observed in granite and other
igneous rock
(Continues on page 8)
COLORADO
MINERAL
&
FOSSIL | 👁 Image
| | Book (edition) | | gems.
Lava is essentially the same material as granite, but so fine
grained that its constituent minerals...feldspar quarries in pegmatite deposits, mines and
mine dumps, and from "float" deposits, minerals loose...it may be unfenced range, a deserted cabin, or a mine dvmip. Cleanliness
to enter
30 GEM hunter's guide...Lincoln Co.
Todd's Branch,
Mecklenberg Co.
Portis mine, Franklin
Co.
Muddy Creek headwaters,
2 or 3...Ferry, Hall Co.
Horshaw mine, Racooche
Valley, White Co.
1866
Vs
White County
Daniel Light form,
% | 👁 Image
| | Report (issue) | | GEOLOGICAL SURVEY
Locatable Mineral Reports for
Colorado, South Dakota, and Wyoming
provided to the U.S.............................................. 1
COLORADO ................................................3
Arapaho and Roosevelt National Forests
Winter Park Properties (Raintree) ............................Complete citations are provided on the figures.]
COLORADO
Gunnison and White River National Forests
Mountain...Coronado Groups (USGS, 1997a)......... 46-49
Part of Colorado Springs - Castle Rock area (Trimble and Machette |
|
