Aragonite Naturally Terminated Gastein Austria 553g

Mineral Name: Aragonite Chemical Formula: CaCO3 - Calcium Carbonate Color: Aragonite exhibits a wide range of colors, including white, colorless, gray, yellow, pink, green, and brown. The specific coloration is often influenced by impurities or exposure to various elements during formation. Crystal System: Orthorhombic Hardness: 3.5 - 4 on the Mohs scale Luster: Vitreous to resinous Transparency: Transparent to translucent Specific Gravity: 2.94 - 2.95 Cleavage: Perfect in one direction Fracture: Subconchoidal to uneven Streak: White Occurrences: Aragonite is commonly found in various geological environments, including sedimentary, metamorphic, and hydrothermal settings. It can form as a primary mineral or as a secondary mineral precipitating from groundwater. Notable occurrences include Spain, Italy, Mexico, Morocco, and the United States. Notable Localities: Some famous aragonite localities include the Molina de Aragón mine in Spain, the Tsumeb mine in Namibia, and the Cave of the Giants in Sardinia, Italy. Formation: Aragonite forms in a variety of conditions, such as marine environments, caves, and hydrothermal veins. It is one of the polymorphs of calcium carbonate, along with calcite. The distinct crystal structure of aragonite results in its unique orthorhombic symmetry. Unique Features: Aragonite crystals often exhibit prismatic or acicular (needle-like) habits. The mineral can also form radiating aggregates, columnar structures, or twinned crystals. Aragonite's luster may vary from vitreous to resinous, and its wide array of colors adds to its aesthetic appeal. Uses: Aragonite is primarily valued as a collector's mineral due to its diverse crystal habits and colors. It is not commonly used in jewelry because of its relative softness and susceptibility to scratching. However, aragonite is frequently used in lapidary work and carved into ornamental objects. Caution: Aragonite itself is not toxic, but like many minerals, it's advisable to wash hands thoroughly after handling to avoid the potential ingestion of mineral dust. Additionally, care should be taken to prevent scratches or damage to aragonite specimens, as they are relatively soft compared to other minerals.