 | 1822 - 448 páginas
...greyish, assumes a very brilliant yellow colour, and would probably afford a fine pigment. It is readily soluble in warm liquid ammonia, and is precipitated white by acids ; the precipitate, by standing, re-acquires the yellow colour. The gangue is quartz, and minute veins of this substance and of what... | |
 | William Phillips - 1823 - 558 páginas
...greyish, assumes a very brilliant yellow colour, and would probably afford a fine pigment. It is readily soluble in warm liquid ammonia, and is precipitated white by acids ; the precipitate by standing re-acquires the yellow colour. It occurs in quartz, and minute veins with what appears to be tungstate... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, Henry Vethake - 1832 - 624 páginas
...orangeyellow powder investing tungsten, from whose decomposition it appears to result. It is readily soluble in warm liquid ammonia, and is precipitated white by acids ; the precipitate, by standing, reacquiring the yellow color. It has only been met with at Munroe, Connecticut. The easiest method... | |
 | Encyclopaedia Americana - 1832 - 620 páginas
...orangeyellow powder investing tungsten, from whose decomposition it appears to result. It is readily soluble in warm liquid ammonia, and is precipitated white by acids ; the precipitate, by standing, reacquiring the yellow color. It has only been met with at Munroe, Connecticut. The easiest method... | |
 | William Phillips - 1844 - 834 páginas
...greyish, assumes a brilliant yellow color, and would probably afford a fine pigment. It is readily soluble in warm liquid ammonia; and is precipitated white by acids, the precipitate by standing, re-acquiring a yellow color. For our earliest knowledge of this mineral we are indebted to Prof. Silliman,... | |
 | Francis Lieber - 1851 - 618 páginas
...orangeyellow powder investing tungsten, from whose decomposition it appears to result. It is readily soluble in warm liquid ammonia, and is precipitated white by acids; the precipitate, by standing, reacquiring the yellow color. It has only been met with at Munroe, Connecticut. The easiest method... | |
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... at Munroe, Connecticut, along with wolfram, in large imperfect crystals imbedded in quartz, and massive, in pieces of considerable dimensions. 3. Yellow oxide of tungsten is found in the state of an orangeyellow powder investing tungsten, from whose... 