Ministry of Energy, Mines and Natural Gas and Responsible for Housing
News | The Premier Online | Ministries & Organizations | Job Opportunities | Main Index

MINFILE Home page   ARIS Home page MINFILE Search page   Property File Search
Help Help
New Window
File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  20-Feb-03 by Ron McMillan(RHM)

Summary Help Help

NMI
Name CLINTON HYDROMAGNESITE Mining Division Clinton
BCGS Map 092P003
Status Showing NTS Map 092P04E
Latitude 51º 05' 37" N UTM 10 (NAD 83)
Longitude 121º 34' 15" W Northing 5661206
Easting 600080
Commodities Hydromagnesite Deposit Types F09 : Playa and Alkaline Lake Evaporites
Tectonic Belt Intermontane Terrane Overlap Assemblage
Capsule Geology

The Clinton hydromagnesite deposits are located 1 kilometre east of the town of Clinton in the Clinton Creek valley.

The Clinton deposits are located in the "Green Timber Plateau" area (EMPR Bulletin 4), a semi-arid plateau area averaging 1130 metres elevation which is part of the Cariboo Plateau and host to several semi-evaporitic playa lakes. The area is underlain by alkaline plateau basalt flows of the Miocene to Pleistocene Chilcotin Group, mantled by a thin cover of glacial till and glaciofluvial sediments. Basement rocks are Permian to Upper Trissic ribbon chert, limestone, argillite and basic volcanic flows and tuffs of the Cache Creek complex. Annual precipitation averages between 300 and 400 millimetres (EMPR Paper 1991-1).

Three small areas of pure hydromagnesite occur within a larger area of impure hydromagnesite covering a combined area of about 0.28 hectare. The material is in the order of 0.6 to 1.4 metres thick and is underlain by a brown hydromagnesite to a depth of about 1.5 metres. Sand and clay underlie the deposit.

Sample No. 1 (Reinecke, 1920) was collected from 0 to 61 centimetres from one of the three hydromagnesite occurrences. Sample 2, 3 and 4 (Reinecke, 1920) were collected from the hillside above and to the southeast of the hydromagnesite and indicate the probable source for the mineral is within the actinolite schist and carbonaceous argillites of the Cache Creek Group of sediments and volcanics.

____________________________________________________________________
MgO CaO CO2 SiO2 Al2O3 Fe2O3 SO2 H2O H2O
+105 -105
#1 41.60 0.22 35.88 2.30 0.63 0.13 0.36 17.53 1.12
#2 2.49 23.04 14.64 42.0 1.75 2.25 6.29 3.73 3.62
#3 2.39 3.30 2.52 77.54 3.87 4.04 0.51 3.82 1.97
#4 3.33 13.84 10.44 60.10 2.62 2.69 1.37 3.07 1.76
#1 - Area 3, 0 to 61 centimetres; #2, 3, 4 - on hillside above
hydromagnesite.
____________________________________________________________________


The total amount of magnesite is estimated to be about 2400 tonnes, of which approximately 900 is of doubtful quality (GSC Memoir 118, page 44).

Bibliography
GSC MEM *118, pp. 26-44
EMPR BULL 4, pp. 112-113
EMPR AR 1922-155
EMPR OF 1987-13

COPYRIGHT | DISCLAIMER | PRIVACY | ACCESSIBILITY