Ontario Geological Survey
Permanent Link to this Record:
MDI000000001284
Record Name(s) | Cripple Creek Flagstone - 1993 |
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Related Record(s) | |
Record Status | Prospect |
Date Created | 2011-Jul-26 |
Date Last Modified | 2022-Jan-30 |
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Revised By |
Primary Commodities: Gneiss
Township or Area: McCraney
Latitude: 45° 35' 40.88" Longitude: -79° 0' 14.44"
UTM Zone: 17 Easting: 655678.001 Northing: 5050953.997 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31E11NE
Point Location Description: precise
Location Method: Based on Assessment
Access Description: From Hwy 11 to Hvy 518 past Kearney east for about 22 km to 0.5 km past past Round Lake to a l km long ridge of flaggy granitic gneiss.
1993-95: Z. Mandziuk - prospecting, petrography, stripping, mapping. 2003-2010: Z. Mandziuk - stripping, stone assessment
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
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OP93-617 | 31L02SW0001 | 31L02SW0001 |
McCraney File 1 31E14NW0002 | 31E14NW0002 | 31E14NW0002 |
McCraney File 2 31E11SE2001 | 31E11SE2001 | 31E11SE2001 |
Province: Grenville
Subprovince: Central Gneiss Belt
Terrane: Algonquin
Domain: Novar
Geological Age: Mesoproterozoic
Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Granitic | Is |
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Aug 15, 2011 (A Wilson) - Along the north side of the road and about 100 metres from it, a series of steep to overhanging rock scarps dips to the northeast and is well-exposed over about1km. Rock is variably flaggy, well-layered, and fissile with parallel ribbon lineation in areas of intense shearing. The stone can be split into thicknesses of about 2-10cm. Greater than 60% of the stone exposed at the site is estimated to be amenable to a variety of possible landscaping and decorative building stone applications, and this percentage should increase with selective light blasting of the face to penetrate less weathered material. The stripping site is part of a 300-metre ridge of steep to overhanging northeast dipping (35-45°) rock scarps trending along, and situated approximately 50 to 60 metres east of, the road (formerly a railway) leading to Rain Lake in Algonquin Park. The rock scarp at the stripped site is approximately 15m high and stepped with moderate overhangings. Orange-pink granitic gneiss comprises most of the rock which is strongly foliated and banded with a finely sparkling sugary lustre and grey biotitic ribbons set in a granoblastic quartzofeldspathic matrix (0.5mm), with evenly dispersed porphyroblasts of lensoid to streaky quartz+feldspar. The stone is variably flaggy to fissile, well-layered, hard, tough, and attractive; with a characteristic streaky felsic ribbon lineation typical of Grenville paragneisses occurring within ductile shear zones. Sparkling, greyish granitic gneiss with more than 20% mafic biotitic layers comprises less than 1/3 of the stripped area and is gradationally interlayered with the orange-pink granitic gneiss. The colour and fabric variations among these two types of gneisses are complementary with regard to combined flagstone applications. On average, the mineral components and their volumetric ranges consist of perthitic potassium feldspars (40- 45%), quartz (30-35%), plagioclase (10-15%), biotite (5-20%), and magnetite (1-2%). The rocks are considered to be metamorphically derived from interbedded arkoses and arkosic wackes.
Aug 15, 2011 (A Wilson) - There is an estimated resource of 100,000 tonnes of building stone (flagstone, veneer stone, ornamental stone, crushed stone) in the area
Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
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Cripple Creek Flagstone | 2010 | Unclassified | 100000 | McCraney File 2 | flagstone, veneer stone, ornamental stone, crushed stone |
Map - Precambrian Geology, Kawagama Lake Area
Publication Number: P3525 Scale: 1:50,000 Date: 2003
Author: Lumbers S.B., Vertolli V.M.
Publisher Name: Ontario Geological Survey
Location:
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