LINDACKERITE Meaning and
Definition
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Lindackerite is a rare mineral that belongs to the class of hydrated copper arsenate sulfates. It was first discovered in 1974 in the Långban mining district of Sweden and was named after Olaf Lindacker, a prominent Swedish mineralogist. This mineral is characterized by its distinct crystal structure and vibrant green coloration. It often occurs as botryoidal or encrusting masses within copper and arsenic-rich environments.
Physically, lindackerite typically forms small, rounded aggregates of radial or concentric fibrous crystals. Its green hue can range from pale to deep emerald, and it is often translucent. The mineral has a vitreous to silky luster and displays a pale green streak when scratched on a streak plate. Lindackerite exhibits perfect cleavage along one crystallographic direction but is overall brittle and fragile.
Chemically, lindackerite is composed mainly of copper, arsenic, sulfur, and oxygen, with the chemical formula Cu_2As_2O_6(SO_4). It crystallizes in the orthorhombic crystal system and belongs to the space group Pbca. Its specific gravity ranges between 3.74 to 3.99, and it typically exhibits a Mohs hardness of 3 to 4, which makes it relatively soft.
Due to its rarity and beautiful color, lindackerite has gained popularity among collectors and mineral enthusiasts. It is often sought after for its aesthetic value and its interesting associations with other minerals in various geological formations. However, because of its scarcity and limited occurrence, it does not have significant industrial applications.
Etymology of LINDACKERITE
The word "lindackerite" does not have an established etymology as it appears to be a relatively new term associated with a specific mineral species. However, it can be inferred that the term is derived from the name "Lindacker", possibly a surname associated with the discovery or study of the mineral. The suffix "-ite" is a common ending used in mineral names to indicate a specific mineral species. It is common for mineral names to be derived from the names of people, geographic locations, or characteristics of the mineral.
