 | | Journal (article/letter/editorial) | | Geoscience in south-west England SOME NOTABLE CORNISH BUILDING AND DECORATIVE STONES C.M. BRISTOW...and decorative stones. Geoscience in south-west England, 10, 000-000. Arising mainly from its exceptionally...exceptionally varied suites of intrusive igneous rocks, Cornwall has a rich variety of building and decorative...for medieval fonts and church carvings in North Cornwall. Polyphant Stone, formed by carbonatization of...eastern part of the Carnmenellis Granite (mainly in Mabe parish), in the St. Austell Granite (Luxulyan, Carn |  | | Journal (article/letter/editorial) | | 161lingite at the New Consols mine, Stolce Climsland, Cornwall. By P. G. EMBREY, B.A., B.Sc., A.R.I.C. Department...elements in the New Consols mine, Stoke Climsland, Cornwall. Unfortunately, I was unable to collect further...of the small number of reported occurrences in Cornwall. S BERYL. The beryl was found in specimens...1 and is referred to by J. Garby ~ together with Mabe and Constantine parishes near Falmouth. Greg and...Long Downs, near Mabe, as a separate locality, b u t Sir Arthur Russell5 regards the Mabe and Constantine |  | | Report (chapter) | | building and decorative stones of Cornwall, UK COLIN M. BRISTOW Cornwall Geoconservation Group, Ty Gwyn...46 Chatsworth Way, Carlyon Bay, St Austell, Cornwall, UK (e-mail: mail@colinbristow.com) Abstract: Arising...varied suites of igneous and sedimentary rocks, Cornwall has a rich variety of building and decorative...such as elvan and sandrock, do not occur outside Cornwall, so local stone provides much character to the...eastern part of the Carnmenellis Granite (mainly in Mabe parish), in the St Austell Granite (Luxulyan, Carn |  | | Journal (article/letter/editorial) | | No. 106. September, 1924. Vol. XX. Topaz from Cornwall, with an account of its localities. By Arthur...hitherto been looked upon as comparatively rare in Cornwall. When massive, or even in the form of small, well-developed...cursorily to be mistaken for quartz. The presence of topaz as a microscopic accessory in granite, greisen,...considerable mass, thus affording evidence that topaz is in Cornwall, as in the case of other countries, a comparatively...forms, seventeen in number, observed on Cornish topaz, the lettering and the indices being those adopted |  | | Catalog/List | | NICK CARRUTH Copse Cottage Drakewalls Gunnislake Cornwall PL18 9EH Tel/Fax: Tavistock (01822) 832530 email:...2006 1) ADULARIA. Ogo Dour, Predannick, Lizard, Cornwall. Nice group of salmon pink xls to 1mm covering...AMETHYST. Park Clay Pit, St Neot, Bodmin Moor, Cornwall. A nice clean group of amethystine xls to 5mm...3) ARSENOLITE. Levant Arsenic Works, Pendeen, Cornwall. Flue product. A group of spiky grey xls to 4mm...60x40y,5nirn. 4) BARITE. Wheal Drea, St Just, Cornwall. Pinkish buff radiating masses in a cavity in |  | | Book | | jewelry purchase, waiting to it not know a topaz from a does so in a lighthearted style. chapters... Chrysoberyl 70 Topaz Alexandrite 70 The Cat's-Eye Chrysoberyl 70 Champagne Topaz 109 Yellow Chrysoberyl... 108 71 Imperial Topaz 110 72 Pink Topaz 111 Padparadscha 72 White Topaz 111 Ruby 73 Other...Pearls 145 Finding Shell 145 Cultured Pearls Mabe Mabe Other Varieties of Pearls Pearls of the South...almandine garnet, amber, amethyst, blood- stone, blue topaz, carnelian, cats-eye quartz, citrine, coral, malachite |  | | Journal (article/letter/editorial) | | 196 EXCURSION TO CORNWALL. MONDAY, AUGUST 8TH, TO SATURDAY, AUGUST 13TH, 1887. Directors: THE PRESIDENT;...Secretary to the Mining Association and Institute of Cornwall; and A. K. BARNETT, F.G.S., of Penzunce. (Report...which a visit of tIle Association to the West of England had been extended beyond the TaIllar, an unusual1y...August 6th, and these had not struck far into Cornwall before an interesting rock presented itself for...the party assembled at the Royal Institution of Cornwall, ill Pydar Street, Truro. Here they were cordially |  | | Book | | Transactions of the Royal Geological Society of Cornwall, for 1848 ; and a table of some of the principal...Transactions of the Royal Geological Society of Cornwall. Reports of the Devonshire Association for the...LOCALITIES IN ENGLAND BEDFORDSHIRE BERKSHIRE BUCKINGHAMSHIRE . CAMBRIDGESHIRE CHESHIRE 31 CORNWALL . 32... 64 65 CONTENTS. X MINERAL LOCALITIES IN ENGLANDā (continued ). OXFORDSHIRE PAGB 65 . RUTLANDSHIRE...124 130 APPENDIX 137 INDEX TO LOCALITIES IN CORNWALL 149 INDEX TO MINERAL SYNONYMS 153 1 THE |  | | Journal (issue) | | NOTES * AND NEW TECHNIQUES Altering the Color of Topaz Kurt Nassau 35 A Preliminary Report on the New...important producers of fine aquamarine, tourmaline, and topaz in the world today. With the award for third place...of deep blue tourmaline up to 1.2 kg, and blue topaz crystals weighing as much as 30 kg, as well as numerous...green tourmaline prisms and well-formed crystals of topaz, hydroxylherderite, and other species. One of the...gem pockets containing the largest and best blue topaz crystals from this deposit were found. Apparently |  | | Book | | crystals form as the magma such as tourmaline, topaz, aquamarine and morganite slowly cools beneath...result of magma form crystals such as amethyst, topaz, / F āThe best Ff crystals of aquamarine, blue...see peridot. Zircon, ruby, sapphire, moonstone, topaz and the rare bixbite (red beryl) can also crystallize...have one or more directions of perfect cleavage. Topaz has three directions of perfect cleavage. Other...fluorite Ā§ 5 i apatite % 4,000 is 6 feldspar tOpaz p 9 10 | | | She te 2s cae | 8 Q | |  | | Journal (issue) | | examplel when damonds GEMS & GEMOLOGY Summer 1992 Topaz Toumdine -- Bordw Roads Gemstone Districts TmzanianCratm...scapolite, sillimanite, sinhalite, sphene, spinel, topaz, turquoise, and zircon (see, e.g., figure 27).The...Synthetic Amethyst on the Basis of Twinning Pink Topaz from Pakistan Carbon Dioxide Fluid Inclusions as...Law Thermal Alteration of Inclusions in Rutilated Topaz Chicken-Blood Stone from China Winter 1989 Emeraldand...a yellowish green diamond and a large dark blue topaz. Numerous radioactive gem materials have appeared |  | | Journal (issue) | | 13. A Mabe type composite cultured pearl. Mabe pearl - coloured with nail varnish The Mabe type composite...approached by one merchant who wondered why his Mabe products could not be assessed in a similar manner...cultured pearls, i.e. the introduction on to the UK market of 'cultured pearls' with extremely thin coatings...extremely thin in some cases, but in addition these same Mabe type composites tended to have been painted on the...a pinkish 'bloom'. Fig. 14. A radiograph of two Mabe type composite cultured pearls, showing clearly |  | | Journal (issue) | | 13. A Mabe type composite cultured pearl. Mabe pearl - coloured with nail varnish The Mabe type composite...approached by one merchant who wondered why his Mabe products could not be assessed in a similar manner...cultured pearls, i.e. the introduction on to the UK market of 'cultured pearls' with extremely thin coatings...extremely thin in some cases, but in addition these same Mabe type composites tended to have been painted on the...a pinkish 'bloom'. Fig. 14. A radiograph of two Mabe type composite cultured pearls, showing clearly |  | | Book (edition) | | Coloured Rocks Limited First Edition printed in the UK Designed by Will Nash Copyright Ā© 2009 by Coloured...children, A huge thank you to our design centre in the UK. ā Hannah, Matt, Jack, Jessica, Tom and Lili, who...thousands of years to come. Take a Ruby, Sapphire, Topaz, Amethyst, Emerald or any one of Natureās colourful...Sarahās Mozambique Garnet ring, to my Maldivian Blue Topaz cufflinks. And the if best thing of all, even...Moonstone Quartz Blue Garnet Blue Sapphire Blue Topaz Blue Tourmaline Burmite Canary Diamond Carbuncle |  | | Journal (issue) | | n the 1980s, massive amounts of irradiated blue topaz entered the market, heat treatment significantly...potentially gem-quality zirconl garnetl aquamarine! and topaz. Future prospects for Rubies and Si~ppl~ires from...Province). The Xuan Le Topaz-Beryl Zones of Central Vietnam. Aquamarine and colorless topaz have been found...the pearl was inlitation. Nicholas DelRe "Treated" Mabe Pearls At the February 1991 Tucson show, several...quite attractive, but relatively inexpensive, white mabe assembled blister pearls. The majority measured |  | | Book | | and gemstones are traced by their geographical England and Wales, Scotland and Ireland occurrence. detail...Mr E. A. Jobbins. The crystal forms of quartz, topaz and fluorite are given after R. P. Greg and W. G...AND PORTENTS 7 ROUND THE BRITISH ISLES PART I, ENGLAND AND WALES ROUND THE BRITISH ISLES PART 2, SCOTLAND...termed āa commercial scaleā; St. Michaelās Mount in Cornwall is out of bounds to all gem-hunters; in Wales...hurly-burly, although some stones, including amethyst and topaz, tend to fade on prolonged exposure to sunlight |  | | Journal (issue) | | Shigley Carlsbad, California Alan Jobbins Caterham, UK Thomas M. Moses New York, New York Mary L. Johnson...Johnson San Diego, California Mark Newton Coventry, UK Anthony R. Kampf Los Angeles, California George...Shigeru Akamatsu Tokyo, Japan Alan T. Collins London, UK DATABASE COVERAGE Editors, Lab Notes Thomas M....New York, New York Christopher M. Welbourn Reading, UK Copies of the current issue may be purchased for...Identifying negative crystals in ruby ā¢ Columbite in topaz 214 Gem News International Diamond treated by |  | | Journal (issue) | | .... .................. 9 GEMS IN CORNWALL AND DEVON, ENGLAND. PARICUTIN , THE WONDER OF THE HEMISPHERE... 8 , ROCKS AND MIN ERALS GEMS IN CORNWALL AND DEVON, ENGLAND R R w By T. ORCHARD LISLE fc Some...at St. Michael's Mount, a small West Country of England, and probably peninsula in the sea off Penzance...on their brief furloughs, can take advanYellow topaz in crystals Ā¼ inch by tage of the mineral deposits...Beacon, near St. exist in Cornwall and in the neighborā¢ Austell, while white topaz occurs in ing county of |  | | Book (edition) | | group t 64 Spine! 100 Rhodochrosite, Rhodonite 168 Topaz 102 Turquoise 170 Garnet 104 Lap is lazuli 172 Zircon... Commercial Name CORRECT Mineralogical Name Indian topaz Jacinth Jet stone Kidney stone Korea jade Lynx eye...alabaster Oriental amethyst Oriental cat's eye Oriental topaz Oriental emerald Ox-eye Paris pearls Paste Pigeon-blood...spinel Schmelye Schnide Shell marble Starlite Star topaz Trainite Vesuvian garnet Vienna turquoise Volcanic...Sulphur Tanzanite Tant alite Thomsonit e Thulite Topaz Variscite Witherite Zoisite Euclase Garnierite |  | | Catalog/List | | C^o. Down Telephone: (024 774) 668 North of England . tc.s.. Ireland W'illiam 1NW Montgomery Telephone...BB7 iy,A Telephone: (0200) 41520 Cumbria CA8 & Cornwall Edinburgh 146 Cambridge CB2 2Ui Devon Street...the 19th Century; and a gold cannetille and pink topaz the front set with a 33 A Diamond Five-stone...cushion-shaped stones, including ruby, sapphire, topaz and hessonite garnet, on a ropetwist chain back...Pearl and Diamond Pendent Earrings; and a pair of mabe pearl and diamond cluster A Seed Pearl and Diamond |  | | Book (edition) | | Licensing Agency Ltd, 90 Tottenham Court Road, London, England W1T 4LP. Applications for the copyright holderās...Science and Technology Rights Department in Oxford, UK; phone: (44) (0) 1865 843830; fax: (44) (0) 1865...Pretoria in South Africa. In the same year in England, Dr Herbert Smith produced his ļ¬rst refractometer...depression years of the 1930s, Basil Anderson in the UK made good use of the downturn in trade to carry out...trade. In 1996, De Beersā DTC Research Centre in the UK announced that they had developed two instruments |  | | Journal (issue) | | UK j I o mi minerals TS C nlm~ 2 EDITORIAL COVER: Vanadinite from the LeadhillsWanlockheadminingdistrict... 5 PEGMATITE MINERALS FROM CI-IYWOON QUARRY The UK Joumal efMines a11dMinerals publishes articles of...Worbop, Nott~. S80 2EE CLASSIFIED ADVERTISMENTS UK Journal of Mines & Minerals No. 26 -1- EDITORIAL...these mark the event out as one of the best in the UK This year the society instigated a mineral competition...spectacular. T Since the theme was fluorite, north-of-England localities featured extensively. Only one case |  | | Show/Event (guide) | | C P 82 + 83 S t o n e s set in Sterling Silver, Mabe Pearls AMBERAMERICA M E 639 A m b e r Amber...n e , Petrified Woods & Gifts w i t Imperial Topaz, Conglomerate h Diamond, Minerals & Gems Handcrafted...Gemstone, Lapis, Jewelry, Silver, Beads Imperial Topaz, Conglomerate with Diamond, Minerals & Gems Mineral...HITECH ENTERPRISES R187 Tourmaline, Aquamarine, Topaz, Ruby, Emeralds, Kunzite HOPKINS OPALS CP61 Black...Jewelry, Natural Color Stones set in Sterling Silver, Mabe Pearls DAISYHOCOLLECTION OF GEM'S JEWELERY GemSet |  | | Journal (issue) | | of the aquamarine and most of the tourmaW l ine, topaz, kunzite, morganite, and many other gem materials...on today's marliet-aquamarine, tourmah e , and topaz, among others-come from an unzisual type of rock...Gem-Bearing Pegmatites A quamarine, tourmaline, topaz, lzunzite, morganite-these are but a few of the...spectacular crystals of gem tourmaline (figure 2))topaz (figure 31, and beryl (figure41, as well as a host...tourmuline (elbaite), garnet (spessartine), chrysoberyl; topaz, feldspar (or~hocluse),beryl (morgunite); beryl |  | | Book | | Nephrite Jade, Chrysoprase, Rhodonite, Agate, Garnet, Topaz, Tourmaline, Zircon, Beryl, Amethyst and Turquoise...1970s. The second area to be mined was the New England district of northern N.SW. where commercial mining...round pearl from Western Australia was sold in England for 260 pounds, which made it as valuable as a...rest period, and are then operated on for half or "mabe" pearls . In this operation the oyster is not cut...nine-month period, the oyster is finally killed and the "mabe" pearls drilled from the shell. The original nucleus |
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