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Ramsay William occurrence, Tudor Township, Hastings Co., Ontario, Canada

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Latitude & Longitude (WGS84): 44° 40' 59'' North , 77° 35' 3'' West
Latitude & Longitude (decimal): 44.68333,-77.58417
GeoHash:G#: drby4w2gm
Köppen climate type:Dfb : Warm-summer humid continental climate


A lead zinc occurrence. The occurrence consists of a system of mineralized calcite and quartz veins with the following dimensions: 0.5 to 4.0 feet wide, 930 feet long, 3 feet wide 200 feet long, and 330 feet long. Workings consist of 3 shallow trenches and at least 5 pits.

Geology:
mineralized veins occur near the boundary of thick, folded sequences of marbles and clastic siliceous metasedimentary rocks. These rock sequences are bounded to the north by the Tudor Gabbro and to the east by the Tudor volcanics and the Lingham Lake mafic intrusive complex. The resultant bedding features in the area are oriented north to northeast and are steeply dipping or vertical.
In places, particularly in the central parts, the calcite veins, which are drusy and contain angular inclusions of the country rocks, show carb structures with either a central cavity containing crystals of calcite,
quartz, barite and sulphide minerals, or a central zone of interlocking calcite crystals... In appropriate order of relative abundance, minerals present in the calcite veins are: calcite, barite, galena, quartz, pyrite, sphalerite, and rarely, pale green fluorite. Most of these minerals
are found as subhedral to euhedral, coarse-grained crystals and crystal aggregates, but some massive pockets of galena are present locally.

The occurrence is located in the southeast part of Tudor Township, approximately 1.0 kilometre southeast of Millbridge and 5.0 kilometres north of Bannockburn. It is accessible on foot a short distance west of Highway 62 at a point about 1.0 kilometre north of the junction with the south access road to Millbridge. The occurrence is indicated on ODM map 2168
(Lumbers 1969).


Mineral List


8 valid minerals.

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

Neoproterozoic - Mesoproterozoic
541 - 1600 Ma



ID: 617198
Grenville Supergroup and Flinton Group

Age: Proterozoic (541 - 1600 Ma)

Stratigraphic Name: Flinton Group

Comments: Grenville Province Central Metasedimentary Belt

Lithology: Marble, calc-silicate rocks, skarn, tectonic breccias

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

Ectasian
1200 - 1400 Ma



ID: 3185742
Mesoproterozoic sedimentary rocks

Age: Ectasian (1200 - 1400 Ma)

Lithology: Marble

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]

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



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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Shklanka, R. (1969) Copper, Nickel, Lead and Zinc Deposits of Ontario, Ontario Geological Survey, Mineral Resources Circular 12, MDC12, p.142.
Ontario Geological Survey, Open File Report 5548, page 146

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