Ontario Geological Survey
Permanent Link to this Record:
MDI31E04SW00007
| Record Name(s) | Moon River Anorthosite - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1991-Feb-02 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Feldspar (Nonmetals)
Township or Area: Freeman
Latitude: 45° 5' 38.49" Longitude: -79° 56' 26.9"
UTM Zone: 17 Easting: 583344.003 Northing: 4993941.005 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31E04SW
Point Location Description: Approximate
Location Method: Data Compilation
Access Description: A bush road to the Arnold's Bay marina branches off Muskoka Road 12, approximately 12 km west of highway 69. This road provides a good cross section through the body.
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Quartz Monzonite | 1 | Hanging Wall |
|---|---|---|---|---|
| Anorthosite | 2 | Gabbroic | Host |
Apr 04, 2011 (A Wilson) - The Moon River anorthosite is pervasively layered. The layers consist of granoblastic white anorthosite layers ranging from 1 to 25 cm in thickness. These alternate with mafic layers which range from 1 to 10 cm in thickness.
Apr 04, 2011 (A Wilson) - The Moon River anorthosite is very clean. The feldspar is almost white and is free of iron oxide inclusions. Although it is commonly sercitized, the flake size of the sericite appears to be sufficiently fine that it may not present a problem in screening. The feldspar is white and is considered to have undergone a high degree of recrystallization. The anorthosite consists of labradorite crystals and laths. The plagioclase generally displays some degree of alteration to sericite.
| Rank | Classification |
|---|---|
| 1 | Industrial |
| Rank | Characteristic |
|---|---|
| 1 | Layered |
Publication - Summary report of the Geological Department of Canada for the calendar year 1905
Publication Number: Sep Rept 947 Page: 86 Date: 1905
Author:
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/224937
Map - Parry Sound-Huntsville area, Ontario
Publication Number: M2118 Scale: 1:126,720 Date: 1967
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Building stone, feldspar and limestone resources in central Ontario
Publication Number: OFR5760 Page: 307-315 Date: 1991
Author: Marmont C.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Sans Souci Area
Publication Number: P3551 Scale: 1:50,000 Date: 2004
Author: Culshaw N.G., Corrigan D., Ketchum J.W.F., Wallace P., Wodicka N.
Publisher Name: Ontario Geological Survey
Location:
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