Ontario Geological Survey
Permanent Link to this Record:
MDI31D16NE00196
| Record Name(s) | Cardiff Pyrochlore - 2000 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Oct-25 |
| Date Last Modified | 2023-May-26 |
| Created By | |
| Revised By |
Primary Commodities: Niobium
Secondary Commodities: Uranium, Thorium, Rare Earth Elements
Township or Area: Cardiff
Latitude: 44° 56' 47.22" Longitude: -78° 6' 16.14"
UTM Zone: 17 Easting: 728423.887 Northing: 4981081.021 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D16NE
Point Location Description: Property symbol ' MM ', 0.5 Km W of Farrel Lake.
Location Method: Conversion from MDI
Access Description: According to GSC Econ Geol # 11, occurrence is actually in lot 10, con 12 - near Cheddar settlement.
1927: C.G. Earle sank a shaft 8 feet square and 30 feet deep on a vein of reddish calcite.
Dec 07, 2005 (C Papertzian) - Ellsworthite - pyrochlore.
| Rock Type | Rank | Composition | Texture | Relationship | Amphibolite | 1 |
|---|---|---|---|---|
| Paragneiss | 2 | |||
| Sandstone | 3 | quartzite |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Betafite | Economic | Ore | ||||
| 10 | Ellsworthite | Economic | Ore | ||||
| 15 | Pyrochlore | Economic | Ore | ||||
| 1 | Apatite | Economic | Gangue |
May 26, 2023 (Therese Pettigrew) - Crystals in black mica and apatite. Calcite vein yellow brown (Dawson, 1974). A shaft was sunk on a vein of reddish calcite about 1.5 feet wide at the top and said to be 3 to 5 feet wide deeper down. The shaft inclines slightly to the west. The calcite varies in colour from light pink to dark red and carries much black mica in books up to 3 inches in diameter and t inch thick, and apatite crystals with flat basal terminations, up to 3 inches long. The ellsworthite crystals occur embedded in calcite or in some cases weathered loose in cavities. The material received from Mr. Earle consisted of a few ounces of small, loose crystals varying from less than 1/4 inch to 1/2 inch in diameter. Most of the crystals were partly coated with a yellowish brown decomposition or resorption product. Some were entirely clear from any superficial coating or alteration. The crystals contained 23.44 wt% Nb2O5, 1.56 wt% UO2, 20.46 wt% UO3, 0.1 wt% ThO2, 1.49 wt% (C3, La, Di)2O3, and 0.12 wt% (Yt, Er)2O3 (Ellsworth, 1932).
| Rank | Classification |
|---|---|
| 1 | Vein |
Publication - Niobium (columbium) and tantalum in Canada; Geological Survey of Canada, Economic Geology Report 29
Publication Number: Econ Geol 29 Page: 83, 138 Date: 1974
Author: Dawson, K R
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/103996
Publication - Rare-element minerals of Canada; Geological Survey of Canada, Economic Geology Series 11
Publication Number: Econ Geol 11 Page: 227-228, 260-261 Date: 1932
Author: Ellsworth, H.V.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102445
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