Matter
- Name
- Ca-Mg-Fe-silicate glass with pyroxene stoichiometry, cosmic composition
- Family
- solid
- Database
- Experimentalists
- Level
- local matter
- Origins
- laboratory
- Provider
- Astrophysical Institute and University Observatory Jena
- Local reference code
- STW 2 (1S)
- Preparation
- selected components
- Method
- selection of homogeneous glassy parts under microscope inspection
- Phase type
- solid
- Texture
- compact glassy
- Type of porosity
- without pores
- Density
- 3.2 $g.cm^{-3}$
- Grain density
- 3.2 $g.cm^{-3}$
- Oxides
-
Formula $MgO$ $FeO$ $CaO$ $SiO_{2}$ Mass fraction (%) 0.184 0.264 0.018 0.534
- Title
- Melting and quenching by copper rollers
- Matter
- Ca-Mg-Fe-silicate glass with pyroxene stoichiometry, cosmic composition (this matter)
- Processing steps
-
Step Date Type Process Changes #1 mixing magnesium carbonate, ferrous oxalate, calcium carbonate, and silicon dioxide are mixed in appropriate portions #2 thermal pellets pressed from the parent mixture were melted in an electric-arc furnace under Ar atmosphere #3 thermal quenched to room temperature by fast compression between two copper pistons