The word "ktenasite" is a rare mineral name that is spelled with the letters "k-t-e-n-a-s-i-t-e". Its correct pronunciation is [k-tuh-nuh-sahyt], where the first syllable is pronounced with a short "uh" sound, and the second syllable ends with a long "i" sound. The word is derived from the Greek term "ktene", which means "comb", in reference to the mineral's hair-like crystal structure. Despite its complicated spelling, "ktenasite" is still an important term for mineralogists and collectors alike.
Ktenasite is a mineral that belongs to the family of arsenate minerals. Its chemical formula is Cu(Cu,Zn)(AsO4)(OH) and it usually appears as a secondary mineral in oxidized copper deposits. Ktenasite typically has a green to bluish-green color and can occur as prismatic or acicular crystals. It commonly exhibits a vitreous to greasy luster and possesses a transparent to translucent appearance. The mineral's hardness is relatively low, ranging from 3 to 4 on the Mohs scale.
Considering its crystal system, ktenasite crystallizes in the orthorhombic system. It has been identified in various geological environments, including the oxidized zone of copper deposits, where it forms as a result of the alteration of primary copper minerals in the presence of arsenic-rich fluids.
The name "ktenasite" is derived from the Greek word "ktenos," meaning "comb," which is a reference to its distinctive crystal habit resembling a comb. The mineral was first discovered in 1922 at the Kamariza Mine in Laurion, Greece, and subsequently named after its locality.
Ktenasite is not a well-known mineral and does not hold significant commercial importance. However, it is appreciated among mineral collectors due to its unique crystal form and its association with other rare secondary minerals in specific localities.
The word "ktenasite" is derived from the Greek language. It comes from the Greek word "κτείνω" (kteíno), which means "to kill" or "to slay". This name was given to the mineral due to its toxic nature, which was observed by those who first discovered it.