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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Sheephill Quarry, West Dunbartonshire, Scotland, UKi
Regional Level Types
Sheephill QuarryQuarry (Active)
West DunbartonshireCouncil Area
ScotlandCountry
UKCountry

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Latitude & Longitude (WGS84):
55° 56' 20'' North , 4° 30' 31'' West
Latitude & Longitude (decimal):
55.93911,-4.50869
GeoHash:
G#: gcuy1rkug
GRN:
N38W02
Type:
Quarry (Active) - last checked 2025
Age:
358.9 ± 0.4 to 323.2 ± 0.4 Ma
Geologic Time:
Mississippian
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Milton530 (2017)0.7km
Bowling520 (2017)1.7km
Bishopton4,640 (2017)3.3km
Old Kilpatrick4,850 (2017)3.8km
Dumbarton19,950 (2017)3.9km
Mindat Locality ID:
450910
Long-form identifier:
mindat:1:2:450910:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Miltonhill; Thompson quarry; William Thopson & Son quarry


Active basalt quarry with locally visible columnar jointing.
Williamm Thompson & Son (Dumbarton) Ltd
Milton (Dumbarton)G82 2RN; Quarry ID in BGS Database of Mines and Quarries - 4577.

Commodity List

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


Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Cameron, I. B., Stephenson, D. (1985) British Regional Geology (5), The Midland Valley of Scotland (3rd ed.) British Geological Surveypp.101-122
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