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4th Lake Granite quarry, Nanimo Lakes, Vancouver Island, Nanaimo Mining Division, British Columbia, Canada

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Latitude & Longitude (WGS84): 49° 4' 34'' North , 124° 24' 11'' West
Latitude & Longitude (decimal): 49.07611,-124.40306
GeoHash:G#: c0xx1nh3n
Locality type:Quarry
Köppen climate type:Csb : Warm-summer Mediterranean climate


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Regions containing this locality

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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.

Detailed Mineral List:

'commodity:Granite'
Reference: From USGS MRDS database
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Jim McKinnon collection
Quartz
Formula: SiO2
Reference: Jim McKinnon collection

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 9 - Silicates
'Prehnite'9.DP.20Ca2Al2Si3O10(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2

List of minerals for each chemical element

HHydrogen
H PrehniteCa2Al2Si3O10(OH)2
OOxygen
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
CaCalcium
Ca PrehniteCa2Al2Si3O10(OH)2

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

Middle Jurassic - Early Jurassic
163.5 - 201.3 Ma



ID: 678955
Island Plutonic Suite

Age: Jurassic (163.5 - 201.3 Ma)

Stratigraphic Name: Island Plutonic Suite

Description: Granodiorite, quartz diorite, quartz monzonite, diorite, agmatite, feldspar porphyry, minor gabbro and aplite (170 - 185 Ma).

Comments: N.W.D. Massey, P.J. Desjardins, and E.C. Grunsky, 1994, Geological Compilation of Vancouver Island, OF 1994-6, BCGS

Lithology: Granodioritic intrusive rocks

Reference: B.C. Geological Survey. British Columbia Digital Geology. [3]

Middle Jurassic - Early Jurassic
163.5 - 201.3 Ma



ID: 3420823
Island Plutonic Suite

Age: Jurassic (163.5 - 201.3 Ma)

Stratigraphic Name: Island Plutonic Suite

Description: Granodiorite, quartz diorite, quartz monzonite, diorite, agmatite, feldspar porphyry, minor gabbro and aplite (170 - 185 Ma).

Comments: Wrangellia terrane

Lithology: Granodioritic intrusive rocks

Reference: Cui, Y., Miller, D., Schiarizza, P., and Diakow, L.J. British Columbia digital geology. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Open File 2017-8. [205]

Permian - Devonian
251.902 - 419.2 Ma



ID: 3189107
Paleozoic volcanic rocks

Age: Phanerozoic (251.902 - 419.2 Ma)

Lithology: Volcanic 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]

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


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