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The cutoff values for mapping carnallite occurrence were set at a minimum grade of 6% carnallite and a minimum thickness of 1 m, based on assay data. Geophysical well logs were used to estimate carnallite content when assay reports were not available (Yang and Chi, 2013).", "geometryType": "esriGeometryPolyline", "sourceSpatialReference": { "wkid": 2151, "latestWkid": 2957, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -5120900, "falseY": -9998100, "xyUnits": 10000, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "Yang, C., Saskatchewan Geological Survey, and Schuurmans, E., Saskatchewan Geological Survey. Any products derived from the use of the data provided by the Saskatchewan Mining and Petroleum GeoAtlas must be cited with the layers and date used to create said products. The \u2018GeoAtlas\u2019 contains information licensed under the Government of Saskatchewan Standard Unrestricted Use Data License (Version 2.0). 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