A rare geometric phenomenon from the heart of Chihuahua. This 2.3kg cabinet specimen is defined by its 'Mariposa' (Butterfly) twinning—a sophisticated mineralogical habit where two crystals grow in symmetrical, mirrored opposition. This isn't just a Calcite; it is a masterclass in twinning laws that occurred under highly specific geological conditions at the Buena Tierra Mine. We selected this piece for its balanced 'wingspan' and the way the Hematite matrix provides a rugged, organic contrast to the sharp, translucent crystal edges. For the serious collector, a Mariposa twin is the definitive representative of the Santa Eulalia District.
SPECIMEN DETAILS The "Twin" Habit: This specimen displays classic contact twinning. Unlike standard clusters, these crystals grew in a synchronized mirrored orientation, creating the iconic "butterfly" silhouette. Dimensions: 19.1 x 13.9 x 11.4 cm (7.5 x 5.5 x 4.5 inches). Weight: 2.3 kg (5.2 lbs). Composition: Translucent Calcite on a Ferruginous (Hematite) matrix. Locality:Buena Tierra Mine, Francisco Portillo, West Camp, Santa Eulalia District, Chihuahua, Mexico
All Gatsby Gems specimens are hand-selected for scientific accuracy and aesthetic brilliance. This specimen include a locality label and will be professionally packaged to protect its delicate 'winged' terminations.
