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Bass Mine (Bass property; Asbestos Camp), Grand Canyon, Coconino Co., Arizona, USAi
Regional Level Types
Bass Mine (Bass property; Asbestos Camp)Mine
Grand CanyonCanyon
Coconino Co.County
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
36° 15' 12'' North , 112° 22' 55'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Supai208 (2017)27.6km
Grand Canyon Village1,550 (2006)30.8km
Grand Canyon1,460 (2018)31.0km
Tusayan567 (2017)38.6km
Other/historical names associated with this locality:
Bass Asbestos


A former asbestos occurrence/mine located in sec. 22, T33N, R1W, G&SRM, Hakatai Canyon, ½ mile N of the Colorado River., in the vicinity of Bass Ferry and 25 miles NW of Grand Canyon station, on National Park Service administered land (Grand Canyon National Park). The deposit is 450 feet from the bottom of the canyon, which is 4,500 feet deep at this location.

Mineralization is in veins along bedding planes in Precambrian Bass Limestone that has been altered adjacent to diabase sills. The thickest veins occur in limestone, 3 to 15 feet below a diabase sill. Associated rocks include Neoproterozoic diabase.

The Grand Canyon exposes an excellent section of the Carboniferous, Cambrian, Algonkian, and Archean rocks. The Algonkian is markedly unconformable with the overlying Cambrian as well as the underlying Archean, and forms a wedge-shaped mass with its edge along the canyon near its bottom and thickening rapidly to the north. The asbestos occurs in the basal portion of the Algonkian. Fifteen feet of whitish limestone overlie beds of siliceous conglomerate and fine shaly beds. This limestone contains layers and nodules of serpentine with more or less asbestos. Above the asbestos limestone comes a heavy layer of compact diabase about 200 feet thick, and above the diabase is a bed of limestone and shaly rocks similar to those immediately below the diabase. A little asbestos is seen above the diabase. local rocks include Mississippian, Devonian, and Cambrian sedimentary rocks.

Production of 4 inch (10 cm) asbestos fiber. Some asbestos was shipped to Europe. Selectively mined in 1920.

Regions containing this locality

North America PlateTectonic Plate
Colorado Plateau, USAPlateau
Grand Canyon National Park, Arizona, USANational Park

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


2 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Chrysotile
Formula: Mg3(Si2O5)(OH)4
Description: Filling cross-fiber veins. Fiber length from a fraction of an inch to 3 inches (7.5 cm) long. Color is remarkable.
Reference: Noble, L.F. (1914), The Shinumo quadrangle, Grand Canyon District, Arizona, USGS Bull. 549: 58-60.; Allen, M.A. & G.M. Butler (1921), Asbestos, Univ. AZ Bull. 113: 25.
Quartz
Formula: SiO2
Reference: Noble, L.F. (1914), The Shinumo quadrangle, Grand Canyon District, Arizona, USGS Bulletin 549: 58-60.
Quartz var: Jasper
Reference: Noble, L.F. (1914), The Shinumo quadrangle, Grand Canyon District, Arizona, USGS Bulletin 549: 58-60.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Description: Nodules and layers in limestone beneath and above a diabase sill.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 367; Allen, M.A. & G.M. Butler (1921), Asbestos, Univ. AZ Bull. 113: 24-25; Selfridge, G.C., Jr. (1936), An X-ray and optical investigation of the serpentine minerals, Am.Min.: 21: 463-503; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 106.; Noble, L.F. (1914), The Shinumo quadrangle, Grand Canyon District, Arizona, USGS Bulletin 549: 58-60.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 9 - Silicates
Chrysotile9.ED.15Mg3(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Chrysotile71.1.5.1Mg3(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
var: Jasper-SiO2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H ChrysotileMg3(Si2O5)(OH)4
OOxygen
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O ChrysotileMg3(Si2O5)(OH)4
O QuartzSiO2
MgMagnesium
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg ChrysotileMg3(Si2O5)(OH)4
AlAluminium
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si ChrysotileMg3(Si2O5)(OH)4
Si QuartzSiO2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian
251.902 - 298.9 Ma



ID: 3187666
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Serpukhovian - Early Cambrian
323.2 - 541 Ma



ID: 3026586
Mississippian, Devonian, and Cambrian sedimentary rocks

Age: Paleozoic (323.2 - 541 Ma)

Stratigraphic Name: Tapeats Sandstone; Bright Angel Shale; Muav Limestone; Temple Butte Formation; Redwall Limestone; Bolsa Quartzite; Abrigo Formation; Martin Formation; Escabrosa Limestone

Description: Brown to dark gray sandstone grades upward into green and gray shale, overlain by light to medium gray or tan limestone and dolostone. This unit includes the Tapeats Sandstone, Bright Angel Shale, Muav Limestone, Temple Butte Formation and Redwall Limestone in northern Arizona, and the Bolsa Quartzite, Abrigo Formation, Martin Formation, and Escabrosa Limestone in southern Arizona. These rocks record intermittent sea-level rise and inundation in early Paleozoic time. (330-540 Ma)

Comments: Original map source: Arizona Geological Survey, DI-8 Geologic Map of Arizona, Digital Spatial data for the Geologic Map of Arizona, v. 3.0, edited by S.M. Richard and S.M. Kneale, 2002, 10 p., 2 DOS HD disks. Arc/INFO export file (.e00) format, scale 1:1,000,000.

Lithology: Major:{sandstone,shale,limestone}, Minor:{dolostone,quartzite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Stenian
1000 - 1200 Ma



ID: 2201341
Unnamed diabase sills and dikes

Age: Stenian (1000 - 1200 Ma)

Description: Black, medium- to coarse-grained, olivine-rich diabase. Contains plagioclase, olivine, clinopyroxene, magnetite-ilmenite, and biotite. Diabase sills and dikes. Chemical variation diagrams indicate a potential common parentage between dikes and sills and the overlying Cardenas, but direct physical connection has not been observed, although isochron ages are basically identical at 1,070±70 Ma (Hendricks and Stevenson, 1990). Sills range in thickness from about 65 ft (20 m) in Clear Creek at eastern edge of map area to more than 655 ft (200 m) near Bass Rapids in central part of map area. Dike widths range from 3 to 12 ft (1 to 4 m)

Reference: Billingsley, G.H. Geologic Map of the Grand Canyon 30' x 60' Quadrangle, Coconino and Mohave Counties, Northwestern Arizona. USGS Geologic Investigations Series I-2688. [34]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Diller, J.S. (1907), Asbestos, in Mineral resources of the United States, Calendar year
1907, Part II—Nonmetallic products: U.S. Geological Survey, p. 711-722.
Noble, L.F. (1914), The Shinumo quadrangle, Grand Canyon District, Arizona, USGS Bulletin 549: 58-60.
Allen, M.A. & G.M. Butler (1921), Asbestos, University of Arizona Bulletin 113: 24-25.
Selfridge, G.C., Jr. (1936), An X-ray and optical investigation of the serpentine minerals, American Mineralist: 21: 463-503.
Stewart, L.A. (1956), Chrysotile-Asbestos Deposits of Arizona, U.S. Bureau of Mines Information Circular 7706. (Link: http://www.admmr.state.az.us/DigitalLibrary/usbm_ic/USBMIC7745Chrysotile-AsbestosofAZ.pdf)
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 106.
Breed, W.J. & Roat, Editors (1974), Geology of the Grand Canyon: 174.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Peirce, H.W. (1990), Arizona Geological Survey, Industrial Minerals card file.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 367.
U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS), U.S. Bureau of Mines, file ID #0040050037.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027893 & 10304513.
USGS MRDS ID #M004367.

USGS MRDS Record:10304513
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