QUE99177 matrix grains (CR Chondrite) heated at 300°C | GhoSST | SSHADE

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Sample

Name: QUE99177 matrix grains (CR Chondrite) heated at 300°C

Owner of sample

Database

GhoSST

Experimentalists

Lydie Bonal

Origin of sample

Date: 2011-07-19
Provider: IPAG
Parent sample: QUE99177 matrix grains (CR Chondrite)

Physical characteristics

Thickness: 15.0 $\pm$ 5.0 ${\mu}m$
Diameter: 40.0 ${\mu}m$
Substrate material: diamond window
Substrate comments: diamond window of 3.5mm diameter
Comments: manual selection under binocular of about 10 matrix grains of approximate diameter between 30 and 50 microns

Sample environment: Temperature

Temperature: 300.0 $\pm$ 5.0 $^{\circ}C$
Temperature max: 300.0 $\pm$ 5.0 $^{\circ}C$
Time at Tmax: 3600.0 $s$

Sample environment: Fluid

Type: vacuum
Fluid pressure: 2.5e-06 $\pm$ 5.0e-07 $mbar$
Comments: sample put in a cell enabling acquisition under primary or secondary dynamic vacuum (from $10^{-4}$ mbar down to $10^{-7}$ mbar)

Documentation and publication

Publications

Bonal et al., 2013, Geochim. Cosmochim. Acta, 106, 111 - 133

Layers in sample

Number

1

Layers

Layer #1 , 15.0 ${\mu}m$

Sample processings

Title

selection of the grains

Precursors

Samples

QUE99177 matrix grains (CR Chondrite)

Produced sample

Sample

QUE99177 matrix grains (CR Chondrite) heated at 300°C (this sample)

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	on parent sample	2011-07-19	thermal	heating at 300°C under vacuum in an environmental cell	partial reduction of the amount of adsorbed $H_2O$

Comments

heating in order to remove adsorbed water on the matrix grains