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Outlines of mineralogy

Chapter 17: SULPHUR.
By Torbern Bergman
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About This Book

A concise scientific treatise that organizes fossil and inorganic substances by their constituent chemical components, advocating composition-based genera and species rather than superficial traits. It defines mineralogy, explains a natural system founded on prevalent parts and variations in mixture, and critiques reliance on color, hardness, and texture because these features often vary independently of composition. The work describes analytical approaches and difficult cases, offers supplemental genera in appendices, and supplies practical aids such as tables and an index to assist identification and application of mineral substances.

SULPHUR.

§ 133.

This name may be given to any acid coagulated by phlogiſton into a ſolid form. If all metals conſist of certain radical acids ſaturated with phlogiſton, as is highly probable, and with reſpect to arſenic is indubitably proved; then metals ought to find a place here. But until this theory be eſtabliſhed by numerous experiments, we ſhall only rank under this head the compounds which have not a metallic nature.

PHLOGISTON ſaturated with vitriolic acid.

Cronstedt, Min. § 151. Common Brimſtone. Sulphur.

PHLOGISTON ſaturated with aerial acid.

Cronstedt Min. § 154. A. plumbago. Black-lead.

The true compoſition of this has been detected by Mr. Scheele.

PHLOGISTON united to the acid of vitriol and of molybdæna; or what amounts to the ſame, ſulphur joined to the acid of molybdæna.

Cronstedt Min. § 154. b. c. Molybdæna. Molybdæna.

The acid of molybdæna has never yet been obtained quite free from phlogiſton (§ 32). If this acid be of a metallic origin, molybdæna is a mineralized metallic ſubſtance, and ſhould be placed with the other minerals.