
thumb|Polyhedral representation of the todorokite structure.
via Wikipedia infobox
{{Infobox mineral | name = Todorokite | category = Manganese minerals | boxwidth = 24 | boxbgcolor = | image = Manjiroite-Todorokite-Calcite-174093.jpg | caption = Todorokite with manjioite and calcite from the Smartt Mine, Kuruman District, South Africa | formula = | IMAsymbol = Tdr | molweight = 583.05 g/mol | strunz = 4.DK.10 (10 ed) 4/D.09-10 (8 ed) | dana = 7.8.1.1 | system = Monoclinic | class = Prismatic (2/m) (same H-M symbol) | symmetry = P2/m (no. 11) | color = Dark brown or brownish black, brown in transmitted light | habit = Aggregates of minute lathlike crystals | twinning = Contact twins are common | cleavage = Perfect on {100} and {010} | fracture = | tenacity = | mohs = | luster = Metallic to dull, silky in aggregates | refractive = Greater than 1.74 | opticalprop = Biaxial | birefringence = nearly 0.02 | pleochroism = X = dark brown, Z = yellowish brown | streak = Black or dark brown | gravity = 3.5 to 3.8 | melt = | fusibility = Does not fuse | diagnostic = | solubility = Soluble in acids | diaphaneity = Opaque, transparent in very thin slivers | other = | references = }}
thumb|Polyhedral representation of the todorokite structure.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).