saliotite

{{infobox mineral | name = Saliotite | image = | alt = | caption = | category = Phyllosilicate minerals | group = Smectite group | formula = | IMAsymbol = Sal | strunz = 9.EC.60 | dana = | system = Monoclinic | class = Prismatic (2/m) (same H-M symbol) | symmetry = C2/m | unit cell = a = 5.15 Å, b = 8.91 Å c = 23.83 Å; β = 94.23°; Z = 4 | color = Colorless to white | habit = | twinning = | cleavage = Perfect on {001} | fracture = | tenacity = | mohs = 2 - 3 | luster = Pearly | streak = White | diaphaneity = Transparent | gravity = 2.75 | density = | polish = | opticalprop = Biaxial (-) | refractive = nα = 1.580 - 1.590 nβ = 1.580 - 1.590 nγ = 1.590 - 1.600 | birefringence = δ = 0.010 | pleochroism = | 2V = 30° to 50° | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = }}

Saliotite is a rare colorless to pearl white phyllosilicate mineral in the smectite group with formula . It is an ordered 1:1 interstratification of cookeite and paragonite. It has perfect cleavage, a pearly luster and leaves a white streak. Its crystal structure is monoclinic, and it is a soft mineral with a hardness rated 2-3 on the Mohs scale.