Effect of Garnet Characteristics on Abrasive Waterjet Cutting of Hard Granite Rock

Table 2

Characteristics of garnets.

Garnet symbol	G1	G2	G3	G4	G5
Type	Pyrope garnet	Almandine garnet	Spessartine garnet	Almandine garnet	Spessartine garnet
Formula	Mg3Al2(SiO4)3	Fe3Al2(SiO4)3	Mn3Al2(SiO4)3	Fe3Al2(SiO4)3	Mn3Al2(SiO4)3
Mineral composition	(i) Pyrope (99.8%)	(i) Almandine (95.4%)	(i) Spessartine (65.6%)	(i) Almandine (97.9%)	(i) Spessartine (90.3%)
	(ii) Calcite (0.2%)	(ii) Quartz (2.9%)	(ii) Hornblende (14.0%)	(ii) Calcite (1.7%)	(ii) Hornblende (9.7%)
		(iii) Magnetite (1.7%)	(iii) Augite (10.3%)	(iii) Quartz (0.4%)
			(iv) Albite (6.5%)
			(v) Rutile (3.6%)
Specific gravity (—)	4.05	3.85	3.66	4.02	3.74
Hardness (Mohs)	8.0	7.5–7.8	6.5–7.5	7.5–8.0	7.5–8.5
Mean particle size (mm)	0.340	0.505	0.475	0.280	0.510
Coefficient of uniformity (—)	1.95	1.22	3.03	1.45	1.20
Source	India	Mongolia	China	Australia	United States of America