Mineralpedia Details for Aragonite
Aragonite
- Formula
- CaCO3
- Crystal System
- Orthorhombic
- Crystal Habit
- Pseudo Hexagonal, Columnar, Fibrous
- Cleavage
- Distinct, None, None
- Luster
- Vitreous (Glassy)
- Color
- colorless, white, gray, yellowish white, reddish white
- Streak
- white
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Sub Conchoidal
- Hardness
- 3.5-4
- WebMineral
- View Aragonite
- Mindat
- View Aragonite
Aragonite from Tsumeb mine, Tsumeb, Namibia
Abundant at Tsumeb, this lead-bearing variety called "tarnowitzite" forms pseudo-hexagonal white prisms with pyramidal terminations. This crystal is 2cm long. There are actually three crystals on matrix.
"Nicholsinite", the zinc-bearing variety of Aragonite with characteristic pseudohexagonal dipyramidal crystals with short prism faces and pinacoids. The crystals average 7-8mm and the largest is 1cm.
Aragonite from Cumberland, England
White, stalititic growth Aragonite.
Aragonite from Broken Hill, New South Wales, Australia
Colorless long prismatic crystals to 3.5cm.
Aragonite from Rosiclare, Hardin Co., Illinois, United States
Snow white pointed Aragonite clusters with individual crystals up to 3mm on purple Fluorite.
Aragonite from Minglanilla, Castile-La Mancha, Spain
Purple to colorless prismatic, twinned Aragonite crystal with many smaller.
Aragonite from Tazouta, Sefrou, Morocco
A nice group of orange to colorless, hexagonal, prismatic crystals, the largest to 4.5cm.
Aragonite from Atikokan, Ontario, Canada
A single terminated crytal to 1.3cm
Aragonite from Pribram, Bohemia, Czech Republic
- Special Info
- Fluorescent
Wow - this may be the most facinating specimen we have ever sold. As you can see it is a delicate network of Aragonite crystals to 1cm. In fact, the entire specimen may indeed be Calcite. Looking closely at this specimen, the terminations on each side are profoundly different. The base crystals are clearly rhombic with one blunt, equant crystal forming the termination. The opposite, pointed end, that looks like the Denver airport, are composed of thin, discoidal crystals stacked in a fashion that produced a sharp single column which apparently grew out of several converging columns. It's one weird crystal formation, which I haven't a clue as to how it formed. It seems to be a floater as there are no attachment points so possibly it formed in a clay.
Aragonite from Crestmore, Riverside Co., California, United States
Large crystals of Aragonite to 2cm from this important locality.
Aragonite from Wenshan mine, Yunnan Province, China
Kind of like a cloud, this cool arrangement would add to anyone's collection.
Aragonite from Molina de Aragón, Guadalajara, Castile-La Mancha, Spain
Cabinet specimen with colorless hexagonal, twinned crystals to 1.5cm.
Aragonite from Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States
Colorless prismatic and acicular crystals to 6mm.
Aragonite from Levane, Bucine, Valdarno, Tuscany, Italy
Excellent sprays of colorless Aragonite to 7mm on brown Kutnohorite.
Aragonite from Kamariza mine, Laurium, Greece
Limonitic matrix with cavities filled with snow white Aragonite crystals to 1.3cm.
