kidwellite
Sign in to saveAlso known as IMA1974-024
Kidwellite in an uncommon mineral that was discovered in Arkansas in the United States. It was approved by the IMA in 1974, but it was only named in 1978 by Moore and Ito after Albert Lewis (Laws) Kidwell.
Wikidata facts
- Image
- Kidwellite-160225.jpg
Show 7 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.DK.20
- Nickel-Strunz 9th edition (updated 2009)
- 8.DK.20
- Commons category
- Kidwellite
- IMA Mineral Symbol
- Kdw
- Mohs' hardness
- 3
- density
- 3.34
- chemical formula
- NaFe³⁺₉₊ₓ(PO₄)₆(OH)₁₁·3H₂O (x ≈ 0.33)
Sources (1)
via Wikidata · CC0
~4 min read
Article
4 sectionsContents
- Properties
- Oriented intergrowths
- Discovery and locality
- References
{{Infobox mineral|boxbgcolor=#64855e|boxtextcolor = #fff|image=Kidwellite-160225.jpg|formula=NaFe3+9+x(PO4)6(OH)4·12H2O (x ≈ 0.33)|IMAsymbol=Kdw|strunz=08.DK.20|system=Monoclinic|dana=42.08.02.01|class=Prismatic H-M Symbol: 2/m|symmetry=P2/c|unit cell=1,393.77|molweight=1,368.34|color=Greenish white, light green, greenish yellow, yellow|cleavage=Perfect on {100}|fracture=Splintery|mohs=3|luster=Resinous, waxy, silky, dull|opticalprop=Biaxial (−)|refractive=nα = 1.787 nβ = 1.800 nγ = 1.805|birefringence=0.018|pleochroism=None|dispersion=Extreme|fluorescence=None|streak=Yellow|gravity=3.04 – 3.3|density=Measured: 3.04 – 3.3 Calculated: 3.34|diaphaneity=Translucent|impurities=Aluminum, Copper, Arsenic}}
Kidwellite in an uncommon mineral that was discovered in Arkansas in the United States. It was approved by the IMA in 1974, but it was only named in 1978 by Moore and Ito after Albert Lewis (Laws) Kidwell.