 | | Book | | Endsleigh House 50 Daniell Road Truro, Cornwall TR1 2DA England Printed in Great Britain by Short Run...that he knew of no place on earth that surpassed Cornwall in the number and variety of its minerals. Hogg's...is subtitled 'in wich [sic] is shown how much Cornwall contributes to the illustration of the science'...later by Collins' A Handbook to the Mineralogy of Cornwall and Devon' (1871; 1892 with addenda, the latter...mention Purser's 'Minerals and locations in S.W. England' (1974). The work was never published, although |  | | Catalog/List | | 1cm £6 ✓ on a ship wreck in 1885 Ives, Comwall, England ABHURITE SnO OH DESCRIPTON Pyroxene Na Fe...Devon .England Madagascar Railway cutting nearCreston . Wyoming ,U S. A Newhavcn Sussex. England I x2...Rich white to faintly blue masses Staffordshire England 25 ANKERITE-KlJTNAHORITE Rich fawn massive. xrayed...Feldspar Felspar Group Amphibole 502 ANTIGORITE 29 ANTIGORITE MgFe SiO 503 APATITE 32 APATITE...APATITE Ca P0/4 F n rnm nirt Ca P0/4/ F F Saga Quarry, Tvedalcn near Larvik. Norway Loch Scridain Mull |  | | Book (edition) | | microgranites (e.g., the elvans of Devon and Cornwall ) , in the marginal portion of granites (schorlaceous...Cordierite may be distinguished from andalusite by its lower index of refraction, a grain placed in Canada balsam...Such " concretionary patches " are known to the quarry men under the name of " heathen ." In rarer instances...West of England. Five large masses of granite (granite-porphyry) occur in Devon and Cornwall . These...abundantly in the mining districts of Devon and Cornwall. 2 This term is selected in preference to " felsite |  | | Book (edition) | | , occur as dykes the quartz-porphyry dykes of Cornwall, the lam; prophyre dykes of Yorkshire and Westmorland...MODE OF OCCURRENCE Ij dykes of the North of England and the dolerite West 13 of Scotland. Veins...word sill for a flat bed Sill of the North of England. 3 is derived from the Great Whin PHYSICAL...striking of many igneous areas, for example, Cornwall, the English Lake District, Wales, Western Isles...Scotland, and Fife. The Whin Sill in the North of England is an intrusive North sheet of basic rock, which |  | | Book | | PO Box 315. Harpenden. Hertfordshire AL5 2ZD. England Telephone: +44 (0)1582 762413 Fax: +44 (0)870 055...the production of e0pper. the mining areas of Cornwall and Devon became important producers of b th tin...Oxford University Museum of Natural History; Royal Cornwall Museum, Truro; Sedgwick Museum, University of...1\llaga::i11e, on minerals from localities in Cornwall. Devon. Cumbria and Yorkshire. He was renowned...theLakeDistrictandCornwall (izoklakeite}" WhealCock,StJust,Cornwall SouthTerrasmine,StStephen•in-Brannel. Comwa!I |  | | Book (edition) | | as dykes ; e.g., the quartz- porphyry dykes of Cornwall, the lam prophyre dykes of Yorkshire and Westmorland...OCCURRENCE 13 dolerite dykes of the North of England and the West of Scotland . Veins.— Veinsare produced...derived from the Great Whin Sill of the North of England. B 18 PHYSICAL CHARACTERS fication, it is known...features of many igneous areas, for example, Cornwall, the English Lake District, North Wales, Western...Scotland, and Fife. The Whin Sill in the North of England is an intrusive sheet of basic rock, which, though |  | | Book (edition) | | Dartmoor and other granite masses in Devon and Cornwall . The plutonic rocks-granite, syenite, diorite...veining slates . ( After De la Beche. ) dykes of Cornwall, the mica-trap dykes of Yorkshire and Westmorland...Westmorland , the basalt dykes of the North of England and the West of Scotland. IGNEOUS ROCKS. IO Necks...rock ; and the appearance of a rock laid bare in a quarry or other section is to a large extent dependent...below 50, and in some excessively basic rocks even lower, reaching a minimum somewhere between 30 and 40 |  | | Book | | A HANDBOOK TO THE MINERALOGY CORNWALL AND DEVON TRUR : PRINTED BY HEARD AND SONS, BOSCAWEN...BOSCAWEN STREET. HANDBOOK MINERALOGY OF CORNWALL AND DEVON, WITH INSTRUCTIONS FOE THEIR DISCRIMINATION...THE MINERS' ASSOCIATION OF CORNWALL AND DEVON; SECRETARY TO THE KOYAL CORNWALL POLYTECHNIC SOCIETY; OF THE...KOYAL GEOLOGICAL SOCIETY OF CORNWALL, AND OF THE ROYAL INSTITUTION OF CORNWALL, &C., &C. ASSOCIATE TRURO:...F.R.S., THB ELECTRICITY OF MINERAL LODES IN CORNWALL, AND OF MANY CORNISH MINERALS, (WHOSE OBSERVATIONS |  | | Book | | 1. Coverack. 2. Picrite (Palseopicrite), Menheniot. 1. Augite-picrite, Shiant Isles. 9 * IV.,...inclusions in quartz of granite at St. Austel, Cornwall. Magnified 200 (6) Group diameters. Fluid inclusion...(c~) in quartz of granite from Ding Dong Mine, Cornwall. Magnified 2000 diameters. The number they are...Vol. (2) On the Rocks of the Mining Districts of Cornwall. See also ALLPORT. J. G. S., Vol. 413. , p. Brussels...1881, vol. III. p. 117. Notes on some North-of -England Dykes. (2) TEALL. (3) M. LEVY has endeavoured |  | | Book (edition) | | more richly magnesian than smaller ones, of later, lower-temperature formation . . Th~ discover~ of these...pseudomorphis1n may be studied. Con1monly fibrous antigorite and/or green chrysotile appear, first along the...and Fs as shown in Fig. 10. Virtually only the lower half of the triangle is occupied by actual pyroxenes:...in Ca2 + than those which crystallized later, at lower temperatures. The change in composition involves...upper figure shows the hemi-orthodome faces; the lower figure, the clinoprism faces. The twin-plane is |  | | Book (edition) | | through a granite dome intrusive in the killas of Cornwall, and penetrated by dykes of ·'elvan." (After MacAlister)...of the sill, Porth/even, Cornwall 78. Granite-pegmatite, Porth/even, Cornwall 79. Section of luxullianite...luxullianite, Luxulyan, Cornwall 80. Cornish "chinastone," a partly kaolinized alkali-granite 81. Porphyritic...cit., Pl. 8) Sketch-map of the Lizard Con1plex, Cornwall. (After Sir John Flett) Sketch-map of part of...of England. (Based on maps by F. Walker and A. Holmes) 141. Structural rnap of Devon and Cornwall, showing | | | Book (edition) | | more richly magnesian than smaller ones, of later, lower-temperature formation. The discovery of these facts...pseudomorphism may be studied. Commonly fibrous antigorite and/or green chrysotile appear, first along the...and Fs as shown in Fig. 10. Virtually only the lower half of the triangle is occupied by actual pyroxenes;...in Ca2+ than those which crystallized later, at lower temperatures. The change in composition involves...upper figure shows the hemi-orthodome faces; the lower figure, the clinoprism faces. The twin-plane is |
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