دیکیت
Sign in to saveDickite () is a phyllosilicate clay mineral named after the metallurgical chemist Allan Brugh Dick, who first described it. It is chemically composed of 20.90% aluminium, 21.76% silicon, 1.56% hydrogen and 55.78% oxygen. It has the same composition as kaolinite, nacrite, and halloysite, but with a different crystal structure (polymorph). Dickite sometimes contains impurities such as titanium, iron, magnesium, calcium, sodium and potassium.
Key facts
- Mineral.name
- Dickite
- Mineral.category
- Phyllosilicate minerals
- Mineral.group
- Kaolinite-Serpentine group, kaolinite subgroup
- Mineral.image
- Dickite-d06-179a.jpg
- Mineral.IMAsymbol
- Dck
- Mineral.strunz
- 9.ED.05
- Mineral.dana
- 71.01.01.01
- Mineral.system
- Monoclinic
- Mineral.class
- Domatic (m) (same H-M symbol)
- Mineral.symmetry
- Cc
- Mineral.unit cell
- a = 5.150, b = 8.940 c = 14.424 [Å]; β = 96.8°; Z = 4
- Mineral.color
- White, with coloration from impurities
- Mineral.habit
- Pseudohexagonal crystals, aggregates of platelets and compact massive
- Mineral.cleavage
- Perfect on {001}
- Mineral.tenacity
- Flexible but inelastic
- Mineral.mohs
- 1.5–2
- Mineral.luster
- Satiny to pearly
- Mineral.streak
- White
via Wikipedia infobox
Wikidata facts
- Image
- Dickite-262230.jpg
Show 9 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.ED.05
- Commons category
- Dickite
- Nickel-Strunz 9th edition (updated 2009)
- 9.ED.05
- type locality (geology)
- Amlwch
- streak color
- white
- crystal system
- monoclinic crystal system
- IMA Mineral Symbol
- Dck
- chemical formula
- Al₂Si₂O₅(OH)₄
- Strunz 8th edition (series ID, updated)
- VIII/E.10a
Sources (1)
via Wikidata · CC0