Karpholite is a mineral that belongs to the monoclinic system of crystallization. Its chemical formula is Mn2+3Al2Si2(OH)12, and its name comes from the Greek words "karphos," which means straw, and "lithos," which means stone. The correct pronunciation of this word is /ˈkɑːrfəlaɪt/, where the stress falls on the first syllable. The letters "ph" in the spelling of Karpholite make the /f/ sound as in the word "phone." This word is commonly used in geology and mineralogy to describe a type of rock that contains manganese and aluminum.
Karpholite is a rare mineral that belongs to the mica group and contains elements of vanadium, titanium, aluminum, and silicon. It was first discovered in Karpholite Cerchiara mine in Italy, from where it derives its name. Karpholite is known for its distinct prismatic crystal structure, displaying a vitreous to pearly luster. Its color ranges from brownish-black to black, and its streak is pale gray.
Karpholite is classified as a metamorphic mineral, commonly found in regional metamorphic rocks as a product of contact metamorphism. It typically occurs in association with other minerals such as muscovite, quartz, feldspar, garnet, and amphiboles. The chemical composition of Karpholite varies depending on the specific location of its occurrence, but it is commonly composed of vanadium, titanium, aluminum, and silicon compounds.
Due to its scarcity and limited occurrence, Karpholite is primarily of scientific interest and is not widely used in commercial or industrial applications. However, its unique crystal structure and intriguing properties make it an attractive specimen for mineral collectors. Its distinct crystal habit and association with other minerals also make it a valuable indicator of specific geological processes and conditions.
In conclusion, Karpholite is a rare mica mineral that forms in metamorphic rocks, particularly in contact metamorphic environments. Its distinct crystal structure, composition, and geological significance contribute to its value in scientific research and mineral collecting.
One of the hornblende family, occurring in fibrous tufts of a straw-yellow colour.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.