asbolane

{{Infobox mineral | name = Asbolane | boxwidth = | boxbgcolor = grey | image = File:Asbolana Peñamellera (Asturias).jpg | imagesize = 230 | alt = | caption = Asbolane in its crystal form | category = Hydroxide mineral | formula = {{chem2|Mn^{4+}(O,OH)2*(Co,Ni,Mg,Ca)_{x}(OH)_{2x}*nH2O}} |IMAsymbol=Asb | molweight = | strunz = | dana = | system = Hexagonal crystal system | class = | symmetry = | unit cell = | color = | colour = Black | habit = | twinning = | cleavage = | fracture = | tenacity = | toughness = | mohs = | luster = | streak = | diaphaneity = | gravity = | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | Curie temp = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = }}

Asbolane, previously cobalt ochre is a manganese (IV) oxy-hydroxide mineral containing also cobalt, nickel, magnesium, and calcium ions. It crystallizes in the hexagonal crystal system. Its chemical formula is {{chem2|Mn^{4+}(O,OH)2*(Co,Ni,Mg,Ca)_{x}(OH)_{2x}*nH2O}}.