Sample
Name
Hibonite crystal, Evisa, surface perpendicular to the c-axis
Date
2002-01-01
Provider
Natural History Museum Vienna, Dr. Vera Hammer
Body name
Earth
Terrain type
unknown
Place
Maromby , Amboasary Sud , Madagascar

Coordinates

Comments
deposit of Esiva eluvials in the Maromby Commune, Amboasary Sud District, often misnamed as "Evisa" or "Elsiva"
Surface roughness
idiomorphous crystal surface
Comments
The hibonite crystal has a platy crystal shape with a large idiomorphous sample surface perpendicular to the c-axis. Because of this precondition the sample surface was not polished.
Temperature
300.0 $\pm$ 5.0 $K$
Temperature max
300.0 $K$
Type
ambient air
Fluid temperature
300.0 $K$
Fluid pressure
1000.0 $mbar$