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Mineral Reference Lookup for Nacrita

This reference page contains mineralogic data for Nacrita and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching Nacrita in the database: Nacrita   Plumbonacrita  

Mineralogical Reference

Nacrita
MineralNacrita
SynonymNacrite

Nacrite (synonym)

MineralNacrite
ChemistryAl 2 Si 2 O 5 (OH) 4
Colorwhite greyYellowishbrownishetc.
LusterPearly
TransparencyMonoclinic
CrystalSystemMonoclinic
Hardness2 - 2½
StreakWhite
IMAStatusApproved
Discovered1807
CellParametersa = 5.14b = 8.94c = 14.4 β=113.7°
Ratioa:b:c = 0.575 : 1 : 1.611
OpticalTypeBiaxial (-)
RIn α =1.557 n β =1.562 n γ =1.563
Birefringenceδ=0.006
SurfaceReliefLow
TypeLocalityEinigkeit Mine Brand- Erbisdorf Freiberg District Erzgebirge Saxony Germany
Strunz8/H.25-30 8 : Silicates H : Phyllosilicates (layered)Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others 25 : Kaolinite group
ANCHHRT_001
MNSTBD_036
WRYSTN_321
UNHRT25_004
DANSPC_465
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