amesite

{{Infobox mineral | name = Amesite | category = Phyllosilicate minerals | group = Kaolinite-Serpentine group, serpentine subgroup | image = Amesite-190280.jpg | imagesize = 260px | alt = | caption = | formula = Mg2Al2SiO5(OH)4 |IMAsymbol=Ame | molweight = | strunz = 9.ED.15 | system = Triclinic | class = Pedial (1) (same H-M symbol) | symmetry = C1 | unit cell = a = 5.307(1), b = 9.195(2) c = 14.068(3) [Å] α = 90.09(2)° β = 90.25(2)°, γ = 89.96(2)°; Z = 4 | color = White, colorless, pink to lilac, pale green | habit = Crystals form as platy to tapering elongated pseudohexagonal prisms | twinning = Common as six-fold sector twins on {001} and polysynthetic twins parallel to {010} | cleavage = Perfect on {001} | fracture = | tenacity = Brittle | mohs = 2.5–3 | luster = Pearly | refractive = nα = 1.597 nβ = 1.599 nγ = 1.615 | opticalprop = Biaxial (+) | birefringence = δ = 0.018 | pleochroism = | streak = White with pale green tint | gravity = 2.77 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent to translucent | other = Kaolinite-serpentine group | references = }}

Amesite is a mineral with general formula of Mg2Al2SiO5(OH)4.