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| Sample Name | JSC-1 |
| Major Minerals | Anorthite, syn sodian, disordered - (Ca,Na)(Si,Al)4O8
Albite, syn disordered - Na(Si3Al)O8 |
| Minor Minerals | Franklinite, syn - ZnFe2O4
Magnetite, syn - Fe+2Fe2+3O4
Forsterite, ferroan - (Mg,Fe)2SiO4 |
| Trace Minerals | Cristobalite, syn - SiO2 |
| Possible Minerals | |
| Notes | Plagioclase is albite and/or anorthite. Spinel group mineral may be franklinite and/or magnetite (need chemistry). Possible trace cristobalite. Minor to major amorphous material. |
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