carpholite

{{infobox mineral | name = Carpholite | image = Carfolite.jpg | imagesize = 260px | caption = | category = Inosilicate | formula = Mn2+Al2Si2O6(OH)4 | IMAsymbol=Car | molweight = | strunz = 9.DB.05 | dana = | system = Orthorhombic | class = Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) | symmetry = Ccca | unit cell = a = 13.83, b = 20.31, c = 5.13 [Å]; Z = 8 | color = Yellow | colour = | habit = Prismatic, acicular to fibrous clusters | twinning = On {100} | cleavage = Perfect on {010} | fracture = | tenacity = Brittle | mohs = 5.5-6 | luster = Silky | streak = | diaphaneity = Translucent | gravity = 2.935-3.031 | density = | polish = | opticalprop = Biaxial (-) | refractive = nα = 1.610 nβ = 1.628 nγ = 1.630 | birefringence = δ = 0.020 | pleochroism = Distinct; X = Y = pale yellow; Z = colorless | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = }} Carpholite is a manganese silicate mineral with formula Mn2+Al2Si2O6(OH)4. It occurs as yellow clusters of slender prisms or needles. It crystallizes in the orthorhombic system.

The carpholite group includes ferrocarpholite, magnesiocarpholite, vanadiocarpholite, and potassiccarpholite.