Sandstone- Jack Pine River, Ontario, Canada

Sandstone with Iron Oxide Mineralization
Jack Pine River, Ontario, Canada
Dimensions: 5.0 × 3.0 × 1.7 cm
Provenance: Original vintage collection label, catalog no. 107, included with specimen.

A distinctive sandstone specimen from Ontario's Jack Pine River, displaying a rich combination of earthy red, rusty orange, golden tan, and warm brown coloration. The specimen features a fine-grained, granular texture with irregular patches and bands of iron oxide mineralization distributed across its surface. Its naturally angular, wedge-shaped form reveals contrasting areas of lighter sandstone and darker iron-rich material, highlighting the rock's varied composition and weathering patterns.

Sandstone is a sedimentary rock composed primarily of sand-sized mineral grains, commonly dominated by quartz and cemented together by silica, carbonate minerals, or iron oxides. The reddish-brown coloration seen in many sandstones results from iron-bearing minerals, particularly hematite and goethite, which can coat individual grains or accumulate along fractures and bedding surfaces. This vintage-labeled specimen from the Jack Pine River area offers an attractive example of iron-rich sedimentary geology and the natural coloration produced by mineral oxidation.