Modelling of Hydroabrasive Erosion in Pelton Turbine Injector

Table 3

Mineral content analysis.

Minerals		Mineral content in sand sample (%)			Average	Hardness (Moh’s scale)
		1	2	3	(%)
Quartz		72	74	76	74	7
Feldspar		4	3	2	3	6
Mica		11	9	10	10	2-3
Other	A	3	5	4	4	≥5
	B	10	9	8	9	<5

Other A: tourmaline and garnet. Other B: carbonate (~5%), clay, organic matters, and a few unidentified sediments.