nacrite
Sign in to saveNacrite Al2Si2O5(OH)4 is a clay mineral that is polymorphous (or polytypic) with kaolinite. It crystallizes in the monoclinic system. X-ray diffraction analysis is required for positive identification.
Key facts
- Mineral.name
- Nacrite
- Mineral.image
- Nacrite - Mineralogisches Museum Bonn1.jpg
- Mineral.caption
- Nacrite, "Frohe Hoffnung"-shaft, Wildental, Ore Mountains
- Mineral.category
- Phyllosilicates Kaolinite-serpentine group
- Mineral.formula
- Al2Si2O5(OH)4
- Mineral.IMAsymbol
- Ncr
- Mineral.strunz
- 9.ED.05
- Mineral.system
- Monoclinic
- Mineral.class
- Domatic (m) (same H-M symbol)
- Mineral.symmetry
- Cc
via Wikipedia infobox
Wikidata facts
- Image
- Nacrite - Mineralogisches Museum Bonn1.jpg
Show 6 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.ED.05
- Commons category
- Nacrite
- Nickel-Strunz 9th edition (updated 2009)
- 9.ED.05
- IMA Mineral Symbol
- Ncr
- chemical formula
- Al₂Si₂O₅(OH)₄
- Strunz 8th edition (series ID, updated)
- VIII/E.10a
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Article
1 sectionsContents
- References
Nacrite Al2Si2O5(OH)4 is a clay mineral that is polymorphous (or polytypic) with kaolinite. It crystallizes in the monoclinic system. X-ray diffraction analysis is required for positive identification.
Nacrite was first described in 1807 for an occurrence in Saxony, Germany. The name is from nacre in reference to the dull luster of the surface of nacrite masses scattering light with slight iridescences resembling those of the mother of pearls secreted by oysters.