BULLETIN OF THE DEPARTMENT OF
GEOLOGY
Vol. 5, No. 23, pp. 331-380, Pls. 27-39 ANDREW C. LAWSON, Editor
MODE OF OCCURRENCE.
BY
WITH CHEMICAL ANALYSES BY
WALTER C. BLASDALE
| PAGE | |||
| Introduction | 332 | ||
| The Locality | 333 | ||
| General Geological Surroundings | 334 | ||
| Occurrence | 336 | ||
| Effects of Earth movement and Pressure | 337 | ||
| Size and Attitude of Outcrop | 339 | ||
| General Relations of Minerals in Veins | 340 | ||
| The Minerals of the Deposit | 341 | ||
| Benitoite | 341 | ||
| Crytsallography | 341 | ||
| Habits | 344 | ||
| Symmetry | 345 | ||
| Etch Figures | 345 | ||
| Natural Etching | 347 | ||
| Physical Properties | 347 | ||
| Chemical Characters | 349 | ||
| Benitoite as a Gem | 353 | ||
| Neptunite | 354 | ||
| Crytsallography | 354 | ||
| Physical Characters | 356 | ||
| Chemical Characters | 357 | ||
| Natrolite | 357 | ||
| Copper Minerals | 359 | ||
| Other Minerals | 360 | ||
| Amphiboles | 360 | ||
| Albite | 361 | ||
| Aegyrine | 363 | ||
| Calcite and Aragonite | 363 | ||
| Manganese Dioxide | 363 | ||
| Country in which the Veins Formed | 364 | ||
| Sequence of Events | 366 | ||
| Distribution of Minerals in Veins | 368 | ||
| Relation to Serpentine | 369 | ||
| General Discussion | 370 | ||