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TheMagnet Cove igneous complex is a smallalkalicring complex lying to the west of the town ofMagnet Cove inHot Spring County, Arkansas.[1] It and the adjacent town are so named due to the existence ofmagnetite and the terrain being acove, a basin-shaped valley.[2]
The complex is ofMesozoic age, intruded intoPaleozoic sediments.[1] Mapping was conducted by the geologists Erickson and Blade in 1963.[3] Units within the complex includecarbonatite,nepheline syenite,phonolite, andijolite.
In addition to the magnetite which forms both massivelodestone and crystals, the complex is strewn with odd and rare minerals, and is thetype locality for five mineral species. Over 100 different minerals have been identified from the area.[4]There are manytitanium minerals such asrutile,anatase,brookite, andperovskite, as well as somevanadium mineralization. Somerare-earth-bearing minerals have also been identified.
Many companies have mined the area over the last century, including the Diamond Jo Quarry.[4]
The complex has developed a unique soil series, Magnet, which has several inches of dark reddish brown loam over reddish brown clay or clay loam. The Magnet is present only over 5000 acres at the complex and a small outlier atPotash Sulphur Springs.[5]
Arkansas Highway 51 runs generally east–west through Magnet Cove.
34°27′14″N92°50′38″W / 34.453889°N 92.843889°W /34.453889; -92.843889
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