30 - Okenite

ID	30
Mineral	Okenite
Location	Mumbai - Maharashtra - India
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Okenite information at mindat.org

ID	2967
Long ID	1:1:2967:0
Formula	`Ca₁₀Si₁₈O₄₆ · 18H₂O`
IMA Status	0 1
Other Occurrences	Amygdules in basalts
Discovery Year	1828
Diapheny	Transparent,Translucent
Cleavage	on {001}
Tenacity	elastic
Colour	White to slightly yellow, blue
Hardness (min)	4.5
Hardness (max)	5.0
About the name	Named in 1828 in honor of the German biologist Lorenz Oken (Lorenz Ocken) (August 1, 1779, Bohlsbach (now part of Offenburg), Ortenau, Baden, Germany - August 11, 1851, Zurich, Switzerland), professor at University of Munich, Germany and later professor at University of Zürich, Switzerland. The original name, ockenite, was later shortened to okenite. On September 11, 1802, "Lorenz Oken came up with a new system of animal classification that demonstrated the path of evolution." (From Cell Theory Timeline, http://www.timetoast.com/timelines/71438) In 1805, Oken was the first to recognize the significance of biological cell structure: "All living organisms originate from and consist of cells" (Lefalophodon: Welcome to NCEAS \| NCEAS. Web. 04 Oct. 2011.) His full birth-name was Lorenz Okenfuss.
Streak	White
Crystal System	Triclinic
Cleavage Type	Perfect
Morphology	Bladed crystals to laths. Commonly as fibers.
Twinning	About [010], composition plane {102}, lamellar
Thermal Behaviour	Heated in a closed tube, yields water. Before the blowpipe, becomes opaque and white and fuses to a glass.
Publication Year	1828
shortcode_ima	Oke

Okenite