Mineral | Chemical formula | Point count | Percentage | Specific gravity | Mohs Hardness |
Opaque minerals (magnetite) | Fe3+2Fe2+O4 | 98 | 33% | 5.2 | 51/2 – 61/2 |
Orthopyroxene (Hyperstene) | (Fe2+,Mg)2[Si2O6] | 87 | 29% | 3.2 – 3.5 | 5 – 6 |
Clinopyroxene (Augite) | (Ca,Mg,Fe2+,Fe3+,Ti,Al)2[(Si,Al)2O6] | 72 | 24% | 3.2 – 3.4 | 5 – 6 |
Olivine | (Mg2+,Fe2+)2SiO4 | 16 | 5% | 3.2 -3.4 | 61/2 – 7 |
Hornblende | (Ca,Na)2–3(Mg,Fe,Al)5(Al,Si)8O22(OH,F)2 | 5 | 2% | 3 – 3.5 | 5 – 6 |
Plagioclase Feldspar | NaAlSi3O8 – CaAl2Si2O8 | 22 | 7% | 2.62 – 2.76 | 6 – 61/2 |
Total | 300 | 100% |