Matches in DBpedia 2014 for { ?s <http://dbpedia.org/property/opticalprop> ?o. }
- Merrillite opticalprop "Uniaxial".
- Mesolite opticalprop "Biaxial".
- Messelite opticalprop "Biaxial".
- Metazeunerite opticalprop "Uniaxial".
- Millosevichite opticalprop "Uniaxial".
- Mimetite opticalprop "Uniaxial , anomalously biaxial".
- Minium_(mineral) opticalprop "Uniaxial".
- Minnesotaite opticalprop "Biaxial".
- Minyulite opticalprop "Biaxial".
- Mirabilite opticalprop "Biaxial , 2V=75.93°".
- Moganite opticalprop "Biaxial".
- Molybdite opticalprop "Biaxial".
- Monazite opticalprop "Biaxial".
- Montmorillonite opticalprop "Biaxial".
- Mooihoekite opticalprop "Weakly anisotropic".
- Mottramite opticalprop "Biaxial".
- Motukoreaite opticalprop "Uniaxial".
- Mullite opticalprop "Biaxial".
- Muscovite opticalprop "Biaxial".
- Nabalamprophyllite opticalprop "Biaxial positive".
- Nahcolite opticalprop "Biaxial".
- Nambulite opticalprop "Biaxial".
- Narsarsukite opticalprop "Uniaxial".
- Nelenite opticalprop "Uniaxial".
- Nepheline opticalprop "Uniaxial".
- Nephrite opticalprop "Double refractive with anomalous aggregate reaction".
- Neptunite opticalprop "Biaxial".
- Nichromite opticalprop "Isotropic".
- Niedermayrite opticalprop "Biaxial".
- Nitratine opticalprop Index_ellipsoid.
- Nontronite opticalprop "Biaxial".
- Norbergite opticalprop "Biaxial".
- Northupite opticalprop "Isotropic".
- Nyerereite opticalprop "Biaxial".
- Népouite opticalprop "Biaxial".
- Obsidian opticalprop Transparency_and_translucency.
- Okenite opticalprop "Biaxial".
- Oldhamite opticalprop "Isotropic".
- Olivenite opticalprop "Biaxial".
- Olivine opticalprop "Biaxial".
- Omphacite opticalprop "Biaxial".
- Opal opticalprop "Single refractive, often anomalous double refractive due to strain".
- Ordóñezite opticalprop "Uniaxial".
- Orpiment opticalprop "Biaxial".
- Orthoclase opticalprop "Biaxial , 2V = 65–75".
- Osarizawaite opticalprop "Uniaxial".
- Osumilite opticalprop "Uniaxial anomalously biaxial".
- Otwayite opticalprop "Biaxial".
- Pabstite opticalprop "Uniaxial".
- Painite opticalprop "Uniaxial".
- Panethite opticalprop "Biaxial".
- Papagoite opticalprop "Biaxial".
- Paragonite opticalprop "Biaxial".
- Paralaurionite opticalprop "Biaxial".
- Paramelaconite opticalprop "Uniaxial".
- Pararealgar opticalprop "Biaxial".
- Pargasite opticalprop "Biaxial".
- Parthéite opticalprop "Biaxial".
- Pascoite opticalprop "Biaxial".
- Pearceite opticalprop "Biaxial".
- Pectolite opticalprop "Biaxial".
- Pentagonite opticalprop "Biaxial".
- Periclase opticalprop "Isotropic".
- Perite opticalprop "Biaxial".
- Perovskite opticalprop "Biaxial".
- Petalite opticalprop "Biaxial".
- Pharmacolite opticalprop "Biaxial".
- Phenakite opticalprop "Uniaxial".
- Phillipsite opticalprop "Biaxial".
- Phlogopite opticalprop "Biaxial , 2V=12".
- Phoenicochroite opticalprop "biaxial".
- Phosgenite opticalprop "Uniaxial ; anomalously biaxial if strained".
- Pickeringite opticalprop "Biaxial".
- Picropharmacolite opticalprop "Biaxial".
- Piemontite opticalprop "Biaxial 2V = 64 - 106".
- Pigeonite opticalprop "Biaxial".
- Pimelite opticalprop "Biaxial Can appear isotropic due to fine grain size".
- Pinalite opticalprop "Biaxial".
- Pinnoite opticalprop "Uniaxial".
- Piypite opticalprop "Uniaxial".
- Plagioclase opticalprop "Biaxial albite, biaxial anorthite".
- Plancheite opticalprop "Biaxial".
- Plattnerite opticalprop "Uniaxial".
- Plumbogummite opticalprop "Uniaxial , segments of crystals may be biaxial".
- Pollucite opticalprop "Isotropic or very weakly anisotropic".
- Polyhalite opticalprop "Biaxial".
- Portlandite opticalprop "Uniaxial".
- Poudretteite opticalprop "Uniaxial/+".
- Powellite opticalprop "Uniaxial".
- Prehnite opticalprop "Biaxial".
- Proustite opticalprop "Uniaxial".
- Pseudobrookite opticalprop "Biaxial".
- Pseudomalachite opticalprop "Biaxial".
- Purpurite opticalprop "Biaxial 2V 38°".
- Pyrochlore opticalprop "Isotropic, weak anomalous anisotropism".
- Pyromorphite opticalprop "Uniaxial May be anomalously biaxial -".
- Pyrope opticalprop "Single refractive, often anomalous double refractive".
- Pyrophanite opticalprop "Uniaxial".
- Pyrophyllite opticalprop "Biaxial".
- Pyroxferroite opticalprop "Biaxial".