Diopside

URI: https://gptkb.org/entity/Diopside
GPTKB entity
AI-created image of Diopside
AI-created image
Statements (52)
Predicate Object
gptkbp:instanceOf gptkb:granite
gptkbp:associatedMinerals gptkb:augite
gptkb:enstatite
gptkb:granite
gptkb:tremolite
gptkb:wollastonite
olivine
gptkbp:birefringence 0.023–0.030
gptkbp:category gptkb:pyroxene_group
gptkbp:chemicalFormula CaMgSi2O6
gptkbp:cleavage prismatic
gptkbp:color brown
gray
white
light to dark green
gptkbp:crystalHabit prismatic crystals
massive
granular
gptkbp:crystalSystem monoclinic
gptkbp:discoveredBy gptkb:René_Just_Haüy
gptkbp:event metamorphic rocks
igneous rocks
gptkbp:fracture uneven
gptkbp:hardnessMohs 5.5–6.5
gptkbp:hasVariant gptkb:black_star_diopside
gptkb:chrome_diopside
gptkb:violane
gptkbp:IMA_symbol gptkb:Di
gptkbp:location gptkb:Canada
gptkb:Finland
gptkb:Italy
gptkb:Russia
gptkb:South_Africa
gptkb:USA
gptkbp:luster vitreous
gptkbp:meltingPoint 1391°C
gptkbp:namedAfter Greek words 'dis' (double) and 'opsis' (vision)
gptkbp:opticalProperties biaxial (+)
gptkbp:pleochroism weak
gptkbp:radioactive non-radioactive
gptkbp:refractiveIndex 1.663–1.701
gptkbp:solubility insoluble in water
gptkbp:specificGravity 3.2–3.4
gptkbp:streak white
gptkbp:symmetry C2/c
gptkbp:transparency transparent to translucent
gptkbp:uses gptkb:granite
source of magnesium
metamorphic petrology indicator
gptkbp:bfsParent gptkb:Grossular_garnet
gptkbp:bfsLayer 5
https://www.w3.org/2000/01/rdf-schema#label Diopside