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Economic Geology monograph 7 prepublication sale
SPECIAL PREPUBLICATION SALE (Closing date November 1, 1990)
Edited by David W. Beaty, The Colorado
mineral
ANNOUNCING
Economic Geology ~on~f~p~ 7 CARBONATE-HOSTED SULFIDE DEPOSITS OF THE CENTRAL COLORADO MINERAL BELT
ANNOUNCING
heft is a 4OO-km-long,
northeasterly
Tommy
trending
8. Thompson,
and
Gary
region of rid? and diverse metallic
P. Landis mineral
deposits.
The central portion of the belt contains
an
exceptional concentration of carbonate-hosted polymetallic ores, most of whid, occur in the Leadville Dolomite. Detailed comparison of these carbonate-hosted deposits shows that they cannot all have formed by the same process. One group of deposits (“Leadville type”) formed as a result of high-temperature hydrothermal activity related to Oligocene subduction-related magmatism. A second group of deposits (“Sherman type”) formed by a completely different process. However, two independent studies of the Sherman-type deposits present dramatically different genetic interpretations. Some researchers have concluded that the deposits developed from regional brines during the Mississippian period. whereas others believe that they dewloped from bssinal bnines set in motion by Tertiary igneous intrusions. are d&nit&e
This rn~r~h wntains the first major comparative reports of donate-heed genetic studies of the famous mining districts of Leadville, Aspen, and Gilman TABLE
deposits in the central Colorado mineral be8 in more than a generation. plus both interpretations of the much-debated Sherman-type deposits.
Included
OF CONTENTS
Preface: Carbonate-hosted sulfide deposits of the central Colorado mineral heft: Introduction, general discussion, Regional geologff studies: Regional, geologic. and tectonic setting of the central Colorado mineral bet Paleozoic stratigraphy, tectonism, thermal hislory, and basin evolution of central Colorado Igneous rocks and carbonate-hosted ore deposits of the central Colorado Geologic studies of the Leadville Dolomite: GeoChemistry of the Leadville Dolomite (Mississippian). cantral Colorado, ~~rnitiza~n and diagenesis of the Leadville Limestone (Mi~~si~i~), The detent The stratigraphic Leadville district: Geology
mineral
Beaty, Landis,
and summary
Wallace De Vote
belt
9ooMrom .
.
in the Leadville
Horton and Geissman
Norton andmemto , Hall
.
central Colorado
of pateolwst and other solutii features in the Mississippian Leadville Formation, central Colorado position. lithologic character, and preore dissolution features of ore-bearing beds in the Leadville Dolomite,
and origin of ore deposits
Leadville-Gilman
ares
Beaty et al.
district, Colorado: Thompson
parI I. Geologic studies of orebodIes and wall rocks. Geofo~ and origin of ore deposits in the Leadville district. Colorado: Pdri Il. O&m, hydrogen, carbon, and lead isotope data and the development of a genetic model Breccia bodies in the Leadville district, with emphasis on occurrences in the Black Cloud mine, Lake County, Colorado Gilman district:
.................................... .....................
......
.......
Beaty, editor
.._..........................EeatyandMerdan
......... ......................... ..... .................................................................................
Part II. Alteration, veining, and carbonate-replacement Pad Ill. fission.tra~ fluid inclusion studies
patterns
surrounding
the main man&-chimney
PartIVStsbleisotopegeo~mistry ....................................................................................... Part V. A reaction path model for the formation of the manto-ype mass&e sulfide replacement PartVLDiscussionandgeneticmodel .......................................................................................... district:
complex
deposits
....................................
The origin of the Ag-Pb-Zn-Ba deposits at Aspen, Colorado, based on geologic and geodnemical studies of the Smuggler Reconnaissance fission-track ~mnol~y of the Aspen mining district, central Colorado .................................................... Shenan-type deposits: Late Mississippian karst caves and Ba-Ag-Pb-Zn mineralization in central Colorado:
.................................... ..............................................................
data and a model of ore deposition
t Beaty et ai. Naesereta t. BeatyandLandis Wendlandf et al. ..Bea~etal Stegen et al. Bryant et al.
......................
.............................................
Part I. Geologic framework, mineralogy, and cave morphology Late Mississippian karst caves and Be-&Pb-Zn mineralization in central Colorado: Part II. Fluid inclusion, stable isotope, and rock geochemistry Geok&zy and origin of She~an-~ deposits, central Colorado Editorial quesfions posed by B.J. Skinner
....................
or&&y
and Arehad
Thompson and Beaty Hezlitt and Thompson
.....................................
........................................
Origin of the ore deposits at Gilman, Colorado: ................................................................ PartI.lntroduction
Aspen
and Thompson
Tschauder
et al.
Landis and Tschauder Johansing and l~rn~n
Reply by Tschauder et al. Reply by Johansing and Thompson Mineralooical and oetrolcuical studies of sulfide ores: The r%ineralcg; and &ology of tellwide-sulfosatt-sulfide replacement deposits in the Leadville BuQeya Guldt,Cokfrado......................................................................................,,............ Gold occurrence in the Black Gloud 3 orebody, Leadville mining district, Lake County, Colorado
U.S.A. . . .._.........~._...... All other countries
Mlneml Beft 1, 1990
at an additional
1.: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : $tg
rate. Write this office for the airmail rate to your countries. 0 Wsa Card #
0 American Exp. Date Make checiw payable (in U.S. dollars only) to: PUBCO,
Name
EG# _
Pddress
lo: PUBCO,
Express Monograph
is not included
in your subscription
to Economic
Geology
or your membership
2907
7
Number of copies ordered _ copws Less 10% discount on orders of 10 or more
0 --
Total Amount
$
Enclosed
Monograph 7 P.O. Bow 637. Univ. of Texas El Paso, TX 79968 U.S.A. Tel: (915) 533-1966 FAX: (915) 544.7416
This volume
_.g404og _,,
‘__.___.,......_______.....,..____...I,.r_........1....,..__...__,................,,...,.....,...........,
Signature
Ydl
Pohland Seaty Gra., and lit@+
Monograph 7 - Carbonate-Hoated Sulfide Deposits of the Central Colorado PREPUBLICATION PRICE, payment must be received before November ~..~._.....,......................_._.._..
~~UBLfCA~ON PRICE, after November 1,lSQlI U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..t..................................... All other countries Airmail is OPTIONAL 0 Master Card #
Dolomite,
in the Society of Economic
Geologists.
$
Edited by David W. Beaty, The Colorado
mineral
ANNOUNCING
Economic Geology ~on~f~p~ 7 CARBONATE-HOSTED SULFIDE DEPOSITS OF THE CENTRAL COLORADO MINERAL BELT
ANNOUNCING
heft is a 4OO-km-long,
northeasterly
Tommy
trending
8. Thompson,
and
Gary
region of rid? and diverse metallic
P. Landis mineral
deposits.
The central portion of the belt contains
an
exceptional concentration of carbonate-hosted polymetallic ores, most of whid, occur in the Leadville Dolomite. Detailed comparison of these carbonate-hosted deposits shows that they cannot all have formed by the same process. One group of deposits (“Leadville type”) formed as a result of high-temperature hydrothermal activity related to Oligocene subduction-related magmatism. A second group of deposits (“Sherman type”) formed by a completely different process. However, two independent studies of the Sherman-type deposits present dramatically different genetic interpretations. Some researchers have concluded that the deposits developed from regional brines during the Mississippian period. whereas others believe that they dewloped from bssinal bnines set in motion by Tertiary igneous intrusions. are d&nit&e
This rn~r~h wntains the first major comparative reports of donate-heed genetic studies of the famous mining districts of Leadville, Aspen, and Gilman TABLE
deposits in the central Colorado mineral be8 in more than a generation. plus both interpretations of the much-debated Sherman-type deposits.
Included
OF CONTENTS
Preface: Carbonate-hosted sulfide deposits of the central Colorado mineral heft: Introduction, general discussion, Regional geologff studies: Regional, geologic. and tectonic setting of the central Colorado mineral bet Paleozoic stratigraphy, tectonism, thermal hislory, and basin evolution of central Colorado Igneous rocks and carbonate-hosted ore deposits of the central Colorado Geologic studies of the Leadville Dolomite: GeoChemistry of the Leadville Dolomite (Mississippian). cantral Colorado, ~~rnitiza~n and diagenesis of the Leadville Limestone (Mi~~si~i~), The detent The stratigraphic Leadville district: Geology
mineral
Beaty, Landis,
and summary
Wallace De Vote
belt
9ooMrom .
.
in the Leadville
Horton and Geissman
Norton andmemto , Hall
.
central Colorado
of pateolwst and other solutii features in the Mississippian Leadville Formation, central Colorado position. lithologic character, and preore dissolution features of ore-bearing beds in the Leadville Dolomite,
and origin of ore deposits
Leadville-Gilman
ares
Beaty et al.
district, Colorado: Thompson
parI I. Geologic studies of orebodIes and wall rocks. Geofo~ and origin of ore deposits in the Leadville district. Colorado: Pdri Il. O&m, hydrogen, carbon, and lead isotope data and the development of a genetic model Breccia bodies in the Leadville district, with emphasis on occurrences in the Black Cloud mine, Lake County, Colorado Gilman district:
.................................... .....................
......
.......
Beaty, editor
.._..........................EeatyandMerdan
......... ......................... ..... .................................................................................
Part II. Alteration, veining, and carbonate-replacement Pad Ill. fission.tra~ fluid inclusion studies
patterns
surrounding
the main man&-chimney
PartIVStsbleisotopegeo~mistry ....................................................................................... Part V. A reaction path model for the formation of the manto-ype mass&e sulfide replacement PartVLDiscussionandgeneticmodel .......................................................................................... district:
complex
deposits
....................................
The origin of the Ag-Pb-Zn-Ba deposits at Aspen, Colorado, based on geologic and geodnemical studies of the Smuggler Reconnaissance fission-track ~mnol~y of the Aspen mining district, central Colorado .................................................... Shenan-type deposits: Late Mississippian karst caves and Ba-Ag-Pb-Zn mineralization in central Colorado:
.................................... ..............................................................
data and a model of ore deposition
t Beaty et ai. Naesereta t. BeatyandLandis Wendlandf et al. ..Bea~etal Stegen et al. Bryant et al.
......................
.............................................
Part I. Geologic framework, mineralogy, and cave morphology Late Mississippian karst caves and Be-&Pb-Zn mineralization in central Colorado: Part II. Fluid inclusion, stable isotope, and rock geochemistry Geok&zy and origin of She~an-~ deposits, central Colorado Editorial quesfions posed by B.J. Skinner
....................
or&&y
and Arehad
Thompson and Beaty Hezlitt and Thompson
.....................................
........................................
Origin of the ore deposits at Gilman, Colorado: ................................................................ PartI.lntroduction
Aspen
and Thompson
Tschauder
et al.
Landis and Tschauder Johansing and l~rn~n
Reply by Tschauder et al. Reply by Johansing and Thompson Mineralooical and oetrolcuical studies of sulfide ores: The r%ineralcg; and &ology of tellwide-sulfosatt-sulfide replacement deposits in the Leadville BuQeya Guldt,Cokfrado......................................................................................,,............ Gold occurrence in the Black Gloud 3 orebody, Leadville mining district, Lake County, Colorado
U.S.A. . . .._.........~._...... All other countries
Mlneml Beft 1, 1990
at an additional
1.: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : $tg
rate. Write this office for the airmail rate to your countries. 0 Wsa Card #
0 American Exp. Date Make checiw payable (in U.S. dollars only) to: PUBCO,
Name
EG# _
Pddress
lo: PUBCO,
Express Monograph
is not included
in your subscription
to Economic
Geology
or your membership
2907
7
Number of copies ordered _ copws Less 10% discount on orders of 10 or more
0 --
Total Amount
$
Enclosed
Monograph 7 P.O. Bow 637. Univ. of Texas El Paso, TX 79968 U.S.A. Tel: (915) 533-1966 FAX: (915) 544.7416
This volume
_.g404og _,,
‘__.___.,......_______.....,..____...I,.r_........1....,..__...__,................,,...,.....,...........,
Signature
Ydl
Pohland Seaty Gra., and lit@+
Monograph 7 - Carbonate-Hoated Sulfide Deposits of the Central Colorado PREPUBLICATION PRICE, payment must be received before November ~..~._.....,......................_._.._..
~~UBLfCA~ON PRICE, after November 1,lSQlI U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..t..................................... All other countries Airmail is OPTIONAL 0 Master Card #
Dolomite,
in the Society of Economic
Geologists.
$