- Database
- Experimentalists
- Date
- 2022-07-05
- Provider
- provided by Bernard Schmitt (Pers. coll. - Coll-BS-00-002).
- Parent sample
- Calcite hydrothermal concretion
- Body name
- Earth
- Terrain type
- mineral subsurface
- Place
- unknown hydrothermal station - Massif Central , Auvergne , France
- Thickness
- 3.5 ± 0.1 mm
- Mass
- 0.3 ± 0.001 g
- 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
- Number
- 1
- Layers
- Title
- crushing to powder and sieving to 25 µm
- Samples
- Sample
- Calcite hydrothermal concretion powder (inf. 25 µm) (this sample)
- Processing steps
-
Step Chronology Date Type Process Changes #1 before layer formation 2022-07-05 mechanical raw piece of hydrothermal calcite cut and crushed in an agate mortar raw powder #2 before layer formation 2022-07-05 mechanical raw powder sieved with 25 µm mesh powder with grain size <25 µm