Chlorite In Quartz Gemstone & Information | Gemopedia by JTV | Gemopedia™

When chlorite occurs as an inclusion within quartz, it gives the gem a green color and may cause phantom growths, as seen by the ghost-like layers of crystal left behind as the crystal grew in stages.
Colors
Brown, Tan, Gray
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Chlorite-in-quartz classification
CommonNameChlorite In QuartzSpeciesQuartzVarietyColorsBrown, Tan, GrayAlternateNamesGemstoneGroupsKeySeparationsRefractive index, appearance, birefringenceClassificationCommentsThe chlorite group is made up of several mineral species two of which are clinochlore and chamosite are they are the most common. -
Chlorite-in-quartz chemistry & crystallography
ChemicalNamesilicon dioxide (aka silica)ChemicalFormulaSiO2SynthesisCrystalSystemTrigonalChemistryClassificationSilicateNatureNaturalCrystallinityCrystalline to AggregateChemistryComments -
Chlorite-in-quartz optical properties
TransparencyTransparent - OpaqueDispersionStrength: weak fire Value: 0.013OpticalCommentsRefractiveIndex1.544-1.553
Tolerance:very constantBirefringence0.009OpticCharacterUniaxialOpticSignPositivePolariscopeReactionDoubly Refractive (DR)FluorescenceSWUV: Inert
LWUV: InertCCFReactionPleochroismNone -
Chlorite-in-quartz characteristic physical properties
Hardness7CharacteristicCommentsStreakWhiteSpecificGravity2.64-2.69 Typical:2.66ToughnessGoodInclusionsChlorite in quartz will have chlorite group inclusions and they sometimes will contian liquid, two-phase and three-phase inclusions, negative crystals, minerals, needles, rutile, iron particles.LusterDullStabilityGoodFractureConchoidalCleavageNone