The mineral is deposited from low temperature hydrothermal solutions which have come into contact with carboniferous lithologies, releasing methane, such as in graphitic schists or, primarily, from areas surrounding coa
IMA Status:
Valid Species (Pre-IMA) 1852
Locality:
The classic locality occurs in the anthracite deposits of the Doehlener Basin of Freital and Burgk, where clear crystals of up to 2 cm, mostly twinned, are found in association with ca
Link to MinDat.org Location Data.
Name Origin:
Named after the British mineralogist, crystallographer and natural philosopher William Whewell (1794-1866), professor of mineralogy at Cambridge.
Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above
Warning: this java applet does not work in some browsers because of security restrictions.
Physical Properties of Whewellite
Color:
Brownish, Colorless, Gray, Yellow, Yellow brown.
Optical Properties of Whewellite
Gladstone-Dale:
CI meas= -1.077 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -1.041 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.25,KPDmeas= 0.2545,KC= 0.1225 Ncalc = 1.27 - 1.28
Calculated Properties of Whewellite
Electron Density:
Bulk Density (Electron Density)=2.29 gm/cc note: Specific Gravity of Whewellite =2.26 gm/cc.
Fermion Index:
Fermion Index = 0.0024436466 Boson Index = 0.9975563534
Photoelectric:
PEWhewellite = 3.53 barns/electron U=PEWhewellite x rElectron Density= 8.08 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Whewellite is Not Radioactive
Chemical Formula: 
