Book contents
- Frontmatter
- Contents
- LIST OF ILLUSTRATIONS
- INTRODUCTION TO THIS VOLUME
- I ON THE FORMS OF THE STRATIFIED ALPS OF SAVOY (1863)
- II NOTES ON THE SHAPE AND STRUCTURE OF SOME PARTS OF THE ALPS, WITH REFERENCE TO DENUDATION (1865)
- III ON BANDED AND BRECCIATED CONCRETIONS (1867–1870)
- IV DEUCALION: COLLECTED STUDIES OF THE LAPSE OF WAVES AND LIFE OF STONES (1875–1883)
- V ON THE DISTINCTIONS OF FORM IN SILICA (1884)
- VI CATALOGUES OF MINERALS
- 1 CATALOGUE OF A SERIES OF SPECIMENS IN THE BRITISH MUSEUM (NATURAL HISTORY) ILLUSTRATIVE OF THE MORE COMMON FORMS OF NATIVE SILICA (1884)
- 2 CATALOGUE OF MINERALS IN ST. GEORGE'S MUSEUM, SHEFFIELD (1877–1886)
- 3 CATALOGUE OF FAMILIAR MINERALS IN THE MUSEUM OF KIRKCUDBRIGHT (1884)
- 4 CATALOGUE OF THE COLLECTION OF SILICEOUS MINERALS GIVEN TO AND ARRANGED FOR ST. DAVID'S SCHOOL, REIGATE, BY JOHN RUSKIN (1883)
- 5 CATALOGUE OF MINERALS PRESENTED TO THE CONISTON INSTITUTE (1884)
- 6 CATALOGUE OF MINERALS SHOWN AT EDINBURGH (1884)
- 7 NOTES ON MINOR COLLECTIONS
- VII THE GRAMMAR OF SILICA (not hitherto published)
- APPENDIX: LETTERS, ADDRESSES, AND NOTES
- INDEX
- Plate section
7 - NOTES ON MINOR COLLECTIONS
Published online by Cambridge University Press: 05 March 2012
- Frontmatter
- Contents
- LIST OF ILLUSTRATIONS
- INTRODUCTION TO THIS VOLUME
- I ON THE FORMS OF THE STRATIFIED ALPS OF SAVOY (1863)
- II NOTES ON THE SHAPE AND STRUCTURE OF SOME PARTS OF THE ALPS, WITH REFERENCE TO DENUDATION (1865)
- III ON BANDED AND BRECCIATED CONCRETIONS (1867–1870)
- IV DEUCALION: COLLECTED STUDIES OF THE LAPSE OF WAVES AND LIFE OF STONES (1875–1883)
- V ON THE DISTINCTIONS OF FORM IN SILICA (1884)
- VI CATALOGUES OF MINERALS
- 1 CATALOGUE OF A SERIES OF SPECIMENS IN THE BRITISH MUSEUM (NATURAL HISTORY) ILLUSTRATIVE OF THE MORE COMMON FORMS OF NATIVE SILICA (1884)
- 2 CATALOGUE OF MINERALS IN ST. GEORGE'S MUSEUM, SHEFFIELD (1877–1886)
- 3 CATALOGUE OF FAMILIAR MINERALS IN THE MUSEUM OF KIRKCUDBRIGHT (1884)
- 4 CATALOGUE OF THE COLLECTION OF SILICEOUS MINERALS GIVEN TO AND ARRANGED FOR ST. DAVID'S SCHOOL, REIGATE, BY JOHN RUSKIN (1883)
- 5 CATALOGUE OF MINERALS PRESENTED TO THE CONISTON INSTITUTE (1884)
- 6 CATALOGUE OF MINERALS SHOWN AT EDINBURGH (1884)
- 7 NOTES ON MINOR COLLECTIONS
- VII THE GRAMMAR OF SILICA (not hitherto published)
- APPENDIX: LETTERS, ADDRESSES, AND NOTES
- INDEX
- Plate section
Summary
1. Cubic colourless Fluor, coated with opaque carbonate of lime, and formed on a base of curved plane quartz.
The whole on base of green fluor, with crystals of galena.
(Note the rounding off like the division of the margin of a leaf—instead of straight superimposed layers, the common form.)
2. Curved plane Quartz (? I am not sure if each small plane is curved or only the general form arrived at), formed in a nodule of agate and amethyst quartz.
3. Right plane quartz—aggregate in crusts (unusual).
4. Common Quartz in a close crust, with block Tourmaline and apatite (the hexagonal white thing)—phosphate of lime.
5. Common Globular agate, throwing itself into zones with Quartz outside (dyed brown artificially and spoiled in colour, but the lines of it better seen).
6. Common globular agate (variety I have called folded) with quartz inside.
7. Common agate—neither globular nor folded, but even, all round, and only following irregularities of matrix.
8. Purple agate with several interferent concretions. Very pretty.
9. Common Grey Chalcedony.
10. Purple Chalcedony on Quartz. (Cornwall and Cornwall only in this form.)
- Type
- Chapter
- Information
- The Works of John Ruskin , pp. 527 - 530Publisher: Cambridge University PressPrint publication year: 2010First published in: 1906