ECONOMIC GEOLOGY. 



253 



Mineral analysis and classification of water from spring at head of Arroyo Santa Cdpuza, 

 Samand Peninsula, Samand Province. 



[Sample collected by C. P. Ross June 30, 1919. Analyst, M. D. Foster.] 



Constituents. Parts per million. 



Silica (Si0 2 ) 13 



Iron (Fe) .07 



Calcium (Ca) 79 



Magnesium (Mg) 9 . 8 



Sodium and potassium (Na+K), calculated 6. 1 



Carbonate radicle (C0 3 ) .0 



Bicarbonate radicle (HC0 3 ) 279 



Sulphate radicle (S0 4 ) 5.3 



Chloride radicle (CI) 11 



Nitrate radicle (N0 3 ) . 95 



Organic matter 3 . 4 



Total dissolved solids 265 



Classification. 



Quality for boiler use Fair. 



Quality for domestic use Fair. 



Quality for irrigation Good. 



Chemical character CaC03. 



Mineral content Moderate. 



Mineral analysis and classification of water from Rio del Puerto Viejo, 1800 meters 

 upstream from Santa Barbara de Samand, Samand Peninsula, Samand Province. 



[Sample collected by C. P. Ross June 25, 1919. Analyst, M. D. Foster.] 



Constituents. Parts per million. 



Silica (SiO«) 27 



Iron (Fe) 2 . 4 



Calcium (Ca) 71 



Magnesium (Mg) 6 . 6 



Sodium and potassium (Na+K), calculated 11 



Carbonate radicle (C0 3 ) .0 



Bicarbonate radicle (HC0 3 ) 243 . 



Sulphate radicle (S0 4 ) 4 . 



Chloride radicle (CI) 17 



Nitrate radicle (N0 3 ) Tr. 



Organic matter 4 . 4 



Total dissolved solids 276 



Classification. 



Quality for boiler use Poor. 



Quality for domestic use F?ir. 



Quality for irrigation Good. 



Chemical character CaC0 3 . 



Mineral content Moderate. 



