Nacrit Mineral Data, minerology database

Mineral Reference Lookup for Nacrit

This reference page contains mineralogic data for Nacrit 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 Nacrit in the database: Nacrit Nacrita Nacrite Nacrite (of Brongniart) Plumbonacrit Plumbonacrita Plumbonacrite

Mineralogical Reference

Nacrit

Mineral	Nacrit
Synonym	Nacrite

Nacrite (synonym)

Mineral	Nacrite
Chemistry	Al 2 Si 2 O 5 (OH) 4
Color	white greyYellowishbrownishetc.
Luster	Pearly
Transparency	Monoclinic
CrystalSystem	Monoclinic
Hardness	2 - 2½
Streak	White
IMAStatus	Approved
Discovered	1807
CellParameters	a = 5.14b = 8.94c = 14.4 β=113.7°
Ratio	a:b:c = 0.575 : 1 : 1.611
OpticalType	Biaxial (-)
RI	n α =1.557 n β =1.562 n γ =1.563
Birefringence	δ=0.006
SurfaceRelief	Low
TypeLocality	Einigkeit Mine Brand- Erbisdorf Freiberg District Erzgebirge Saxony Germany
Strunz	8/H.25-30 8 : Silicates H : Phyllosilicates (layered)Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others 25 : Kaolinite group