Sample
Name
Calcite hydrothermal concretion
Date
1970-01-01
Provider
provided by Bernard Schmitt (Pers. coll. - Coll-BS-00-002)
Body name
Earth
Terrain type
mineral subsurface
Place
unknown hydrothermal station - Massif Central , Auvergne , France
Thickness
2.0 ± 0.1 mm
Surface roughness
smooth
Comments
calcite possibly containing minor impurities, other mineral phases and significant amount of adsorbed water
Temperature
18.0 ± 2.0 C
Type
ambient air
Fluid temperature
18.0 ± 2.0 C
Fluid pressure
1.0 bar