Problems in the dissolution of silicates by acid mixtures
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 111 (9) , 1107-1108
- https://doi.org/10.1039/an9861101107
Abstract
The decomposition of silicate rocks using mixtures of mineral acids has been studied. The conventional acid method of dissolving rocks with hydrofluoric-perchloric-nitric acid mixtures is unsatisfactory when pyrophyllite is present. This mineral is not destroyed by acid attack, whereas other silicates such as mica, kaolinite, quartz, feldspars, smectite and interstratified illite-smectite are decomposed. If the acid attack is carried out in a pressure vessel, pyrophyllite is dissolved completely, but with more difficulty than the other silicate minerals present.Keywords
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