Chemical News and Journal of Industrial Science, Tomy 31-32Chemical news office., 1875 |
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Strona 153
... mineral consisted , while in a direction at right angles to these fibres the hardness exceeded 2. The specific gravity was 2.70 . The mineral , on analysis , proved to be a hydrated magnesium silicate , with mere traces of alumina ...
... mineral consisted , while in a direction at right angles to these fibres the hardness exceeded 2. The specific gravity was 2.70 . The mineral , on analysis , proved to be a hydrated magnesium silicate , with mere traces of alumina ...
Strona 35
... mineral it unites . This part of every rock engages attention , also , from its acting as a positive compound does in a simple mineral . It is complex in composition ; usually it con- sists of silicates of protoxide bases . At one ...
... mineral it unites . This part of every rock engages attention , also , from its acting as a positive compound does in a simple mineral . It is complex in composition ; usually it con- sists of silicates of protoxide bases . At one ...
Strona 113
... mineral species . ( I tried to count the varieties , and " caved in . " ) The " Index of the Mineral species with their varieties contained in the British Museum " ( January 1 , 1875 ) , gives the names of 690 mineral species and 722 ...
... mineral species . ( I tried to count the varieties , and " caved in . " ) The " Index of the Mineral species with their varieties contained in the British Museum " ( January 1 , 1875 ) , gives the names of 690 mineral species and 722 ...
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