Aegirine crystal, 5.3 cm, on matrix, from Magnet Cove, Hot Springs County, Arkansas. Ex Ann and Perkins Sams collection, ex Houston Museum of Natural Science collection, ex Ted Johnson collection. Joe Budd photo.
, a sodium iron pyroxene, shows jet-to-olive prisms, sharp monoclinic crystals, and radiating clusters; prized by collectors for bold color and matrix.
Magnet Cove, USA - classic American locality known for titanium-rich minerals (brookite, rutile, perovskite); striking crystals on quartz attract collectors.
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