A-86.2 | GhoSST | SSHADE

Sample

Name: A-86.2

Owner of sample

Database

GhoSST

Experimentalists

Boris Chauviré

Origin of sample

Date: 2017-01-01

Body name: Earth
Terrain type: mineral surface
Place: Kashau, Slovakia , Slovakia

Coordinates

System: WGS84

Physical characteristics

Thickness: 146.0 $\pm$ 5.0 ${\mu}m$
Sample changes: Opal releases molecular water at low pressure, inducing changes on all bands. However, this dehydration is not systematic.

Sample environment: Temperature

Temperature: 20.0 $\pm$ 3.0 $^{\circ}C$

Sample environment: Fluid

Type: ambient air
Fluid temperature: 20.0 $\pm$ 3.0 $^{\circ}C$
Fluid pressure: 7.7 $\pm$ 0.5 $mbar$
Comments: The low-pressure (stabilized between 7.2 and 8.3 mbar) was maintained for a minimal period of 3 hours (for samples with no reaction visible in the spectra) or until steady state is reached and visible in the spectra (up to 23 hours).

Sample environment: Mechanical pressure

Pressure: 7.7 $\pm$ 0.5 $mbar$
Comments: The low-pressure (stabilized between 7.2 and 8.3 mbar) was maintained for a minimal period of 3 hours (for samples with no reaction visible in the spectra) or until steady state is reached and visible in the spectra (up to 23 hours).

Documentation and publication

Publications

Chauviré et al., 2021, Earth Planet. Sci. Lett., 576, 117239

Layers in sample

Number

1

Layers

Layer #1 , 146.0 ${\mu}m$