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1.8" Colorless Trapezohedral Analcime on Druzy Quartz - Argentina
This is a really cool find collected near the small town of Cerro Cóndor in the Chubut Province of Argentina. It's a 1.8" wide cluster of colorless, well formed trapezohedral analcime crystals on a micro quartz encrusted matrix.
About Analcime
Analcime is a white to gray mineral that's classified as a zeolite, but structurally and chemically it is more similar to the feldspathoids. It's a hydrated sodium aluminum silicate found in basic igneous rocks like basalt, where it fills cavities or occurs as veins, often associated with other zeolites. Key features include its vitreous luster, isometric crystal system forming pseudo-cubic trapezohedrons, and weak piezoelectricity, giving it its name from the Greek for "weak".
General Chemical Formula - NaAlSi₂O₆•H₂O
Analcime is a white to gray mineral that's classified as a zeolite, but structurally and chemically it is more similar to the feldspathoids. It's a hydrated sodium aluminum silicate found in basic igneous rocks like basalt, where it fills cavities or occurs as veins, often associated with other zeolites. Key features include its vitreous luster, isometric crystal system forming pseudo-cubic trapezohedrons, and weak piezoelectricity, giving it its name from the Greek for "weak".
General Chemical Formula - NaAlSi₂O₆•H₂O
SPECIES
Analcime & Quartz
LOCATION
Cerro Cóndor, Paso de Indios Department, Chubut Province, Argentina
SIZE
1.8 x 1.5"
CATEGORY
ITEM
#336394
