The Cressman Gulch is a mica, feldspar, and beryllium mine located in Jefferson county, Colorado.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation:
Commodity: Mica, Feldspar, Beryllium
Lat, Long: 39.79046, -105.24973
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Cressman Gulch MRDS details
Site Name
Primary: Cressman Gulch
Commodity
Primary: Mica
Primary: Feldspar
Primary: Beryllium
Location
State: Colorado
County: Jefferson
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Muscovite
Ore: Feldspar
Ore: Beryl
Comments
Comment (Production): ITEM 2: BERYL. ITEM 3: COLUMBITE-TANTALITE.
Comment (Geology): GEOL.DESC: PEGS E-W 70S TO VERTICAL. COMPOSED OF ALBITE, MICROCLINE, QTZ, MUSCOVITE, APATITE, TOURMALINE, BIOTITE, BERYL, COLUMBITE-TANTALITE, MANGANOTANTALITE
References
Reference (Deposit): CONSV. DIV. COMP. DATE, 3,64
Reference (Deposit): USBM 1966, IC 8298, P. 27
Reference (Deposit): USGS COMMODITY FILE, GR III, REEL 31 DOCK. 9937, 1945, GR. III, REEL 32, DOCK. 10049, 1943, GR. III, REEL 40, DOCK. 12742, 1944
Reference (Deposit): USBM MIN. EXAM. FILE, REPT. DATE 1/29/59
Colorado Mining Photos
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