lithiophilite

{{Infobox mineral | name = Lithiophilite | category = Phosphate minerals | boxwidth = | boxbgcolor = | image = Lithiophilite-mu04a.jpg | imagesize = 200px | caption = | formula = | IMAsymbol = Lhp | molweight = | strunz = 8.AB.10 | system = Orthorhombic | class = Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) | symmetry = Pmnb (if holohedral) | color = Clove-brown, yellowish brown, honey-yellow, salmon-pink, blue-gray, gray | habit = Prismatic – crystals shaped like slender prisms, stout prismatic, large single crystals, massive, oriented overgrowths | twinning = Rare contact twins on {130} | cleavage = [100] perfect, [110] and [011] poor | fracture = uneven to conchoidal | mohs = 4–5 | luster = Vitreous to subresinous | polish = | refractive = nα = 1.669, nβ = 1.673, nγ = 1.682 | opticalprop = Biaxial (+), 2V = 65° | birefringence = δ = 0.0130 | pleochroism = None to weak | fluorescence= | absorption = | streak = White to grayish white | gravity = 3.445–3.50 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent to translucent | other = | references = }}

Lithiophilite is a mineral containing the element lithium. It is lithium manganese(II) phosphate with chemical formula . It occurs in pegmatites often associated with triphylite, the iron end member in a solid solution series. The mineral with intermediate composition is known as sicklerite and has the chemical formula ). The name lithiophilite is derived from the Greek philos () "friend", as lithiophilite is usually found with lithium.