changbaiite

{{Infobox mineral | name = Changbaiite | category = Oxide minerals | boxwidth = | boxbgcolor = | image = Changbaiite.jpg | caption = | formula = PbNb2O6 | molweight = 489.01 gram/mol | strunz = 4.DF.10 | system = Trigonal | class = Ditrigonal pyramidal (3m) (same H-M symbol) | symmetry = R3m | color = Colorless, Cream white, Pale brown, Yellow brown, Pale yellow green | habit = Tabular - Form dimensions are thin in one direction. | twinning = | cleavage = {0001} Perfect, {1011} Distinct | mohs = 5.5 | luster = Adamantine - Pearly | refractive = | opticalprop = Uniaxial (+), w=2.476, e=2.485, bire=0.0090. | fluorescence= Non-fluorescent | streak = white | gravity = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent | references = }}

Changbaiite (PbNb2O6) is a member of the oxide mineral class in which the mineral contains oxygen which is grouped along with one or two metal ion. Changbaiite is classified as a multiple Oxide XY2O6 and it generally has an ionic bond. Furthermore, it is also orthorhombic at a temperature of 25 °C and it changes to orthorhombic-tetragonal at 570 °C.