Danalite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Danalite is a very rare brown, yellow to pink-red colored mineral named for the American mineralogist James Dwight Dana in 1866. Danalite has a limited number of global sources, including the New England states of Massachusetts, Rhode Island and Delaware.
Colors
Pink, Gray, Yellow, Reddish Brown, Red
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Danalite classification
CommonNameDanaliteSpeciesDanaliteVarietyColorsPink, Gray, Yellow, Reddish Brown, RedAlternateNamesGemstoneGroupsKeySeparationsClassificationComments -
Danalite chemistry & crystallography
ChemicalNameChemicalFormulaFe42+(Be3Si3O12)SSynthesisCrystalSystemCubicChemistryClassificationSilicateNatureNaturalCrystallinityCrystallineChemistryComments -
Danalite optical properties
TransparencyTranslucentDispersionOpticalCommentsRefractiveIndexBirefringenceOpticCharacterOpticSignPolariscopeReactionFluorescenceSWUV:
LWUV:CCFReactionPleochroismUnobservable -
Danalite characteristic physical properties
Hardness5.5-6CharacteristicCommentsStreakSpecificGravity3.28-3.46ToughnessPoorInclusionsLusterVitreousStabilityFractureUnevenCleavagePoor, in two directions