 | | Journal (article/letter/editorial) |
| 1989 Petrology of a New Basalt Occurrence in Hungary A. Embey-Isztin 1, G. Dobosi 2, G. Noske-Fazekas...Research, Hungarian Academy of Sciences, Debrecen, Hungary With 7 Figures Received February 14, 1989; accepted...Phenokristallen; K/Ar Alter, Introduction In Hungary, several basalt provinces (Fig. 1) differing from...alkali basalts of Transdanubia and of the N6grfid District (Embey-Isztin, 1981; Embey-Isztin and Scharbert...basalt discovered near the village of Bfir, S Hungary (Fig. 1), though also of Pleistocene age (Balogh |
 | | Catalog/List |
| YOU HAVE BEEN ABAY, THERE IS STILL A GOOD CHANCE 1 HILL STILL HAVE THESE ONES IN STOCK. - - - GIVE HE A...grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4 1x2 £10 156 NATIVE...matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1 £4 1x2 £7.50 360 PARATELLURITE...matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins £4 107 CHLORARGYRITE Ag Cl good...3 crystals £5. One xl on rock £2.50 (Rudabanya Hungary) 090 GALKHAITE (Cs Tl) (Hg Cu Zn) As Sb S. A TOXIC |
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| SILICA GROUP FELSPAR GROUP . NEPHELINE - LEUCITE GROUP MICA GROUP AMPHIBOLE GROUP PYROXENE GROUP OLIVINE...many igneous areas (e.g. , in the English Lake District and in North Wales) . Dykes and Veins. - A dyke...sometimes form marked features in the scenery of a district ; for, being more capable of resisting the disintegrating...beautiful scenery of North Wales and of the Lake District owes its origin to the great development of volcanic...rock ; and the appearance of a rock laid bare in a quarry or other section is to a large extent dependent |
 | | Catalog/List |
| OFF SPECIMENS. JUST GIVE HE A RING TO.HAKE SURE 1 HILL BE HERS. I All ALSO PLEASED TO DISCUSS YOUR REQUIREMENTS...Arsenopyrite and Pitticite (brown) (Nagyborzsony,North Hungary » ins £3 107 CHLORARGYRITE Ag Cl good greenish...3 crystals £5. One xl on rock £2.50 (Rudabanya Hungary) 248 GADOLINITE (Ce La Nd Y) Fe Be Silicate.2mm...matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) lx)4ins £4 063 CAVANSITE Ca (V 0 ) SiO...matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) lxl £4 1x2 £7.50 497 TELLURITE Te |
 | | Report (issue) |
| Intermediate ring._____________________ Altered phonolite._________________ Undivided trachyte-phonolite_..._________________________ Zeolite. ___________________________ Pyroxene._________________________ Garnet.___________________________...geology of Magnet Cove igneous area, Hot Spring County, Ark. Map showing relation of igneous rocks of...____________________-____-_____-___--_-__ Analyses of pyroxene._____________________________________________...carbonatite, an intermediate ring of trachyte and phonolite, an outer ring of nepheline syenites, and two |
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| Sedimentary Rocks erate Sand hydrite Andesite Phonolite Trachyte Rhyolite Dacite Basanite CHAPTER ROCKS...are placed in the same group, as for instance the six members of the calcite group. About a thousand kinds...Precious opals are found in New South Wales and in Hungary. Fire opal is found in Mexico. ISOMETRIC PYRITE...especially the gravels. WERNERITE (SCAPOLITE GROUP). Composition: mCa4 Al 6 O nNa 4 Al 3 Si 9 O, 4...Superior As a commercial iron ore from the Lake district. ILMENITE. Composition : FeTiO,,. Criteria |
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| Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...Famous mineral localities: The Cripple Creek Mining District, Colorado . . . . . . . . . . . . . . . . . ....collection to the Natural History Museum of Los Angeles County. Julius Weber was well known in the mineral community...Department of the Natural History Museum of Los Angeles County has placed a high priority on building its micromount...March–April, 2005 Miners from throughout the Tri-State District brought him specimens which he bought for the |
 | | Book (edition) |
| sometimes form marked features in the scenery of a district ; for, being more capable of resisting the weather...See Alteration of Rocks (p. 75). SILICA Quartz. GROUP . Pure silica, SiO2. rhombohedral system, the...vesicular lavas (melaphyre, basalt, etc. ) . FELSPAR GROUP. The felspars crystallize in two systems, the mono...perthite or micro- perthite. NEPHELINE-LEUCITE GROUP.¹ Nepheline. Silicate of potash, soda and alumina...certain lavas (phonolite, nepheline basalt, tephrite, etc.) 1 Also called FELSPATHOID GROUP, on account |
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| monzonite (Monzoni, Tyrolean Alps), nelsonite (Nelson County, Virginia), nevadite, norite (Norway), pacificite...[disturbed microcrystalline], grospydite [grossular + pyroxene + disthene (kyanite)], kamafugite [katungite +...1932. Petrography and Petrology. New York: McGraw-Hill. Giimbel, Karl W. 1886. Grundziige der Geologic...1956. Microscopic Petrography. New York: McGraw-Hill. Hill, Carol A. 1976. Cave Minerals. Huntsville, Ala...mafic minerals olivine orthopyroxene clinopyroxene pyroxene hornblende SAMPLE ENTRY Rock name norite ig |
 | | Book (edition) |
| The Silica Group The Felspar Group 81 85 The Felspathoid Group 98 The Amphibole Group 104 The Pyroxene...Pyroxene Group 110 The The The The Olivine Group Mica Group Scapolite Group Garnet Group 118 120...125 The Tourmaline Group 125 The Epidote Group The Phosphate and Fluoride Group 128 The The The The...The The Iron - Ore Group Spinel Group Zircon Group Titanic Acid Group Carbonate Group - 129 131 . 133...133 134 135 138 The Zeolite Group 140 The Chlorite Group 141 Other Hydrated Silicates 142 Contact |
 | | Catalog/List |
| 3 er stals ES. One xl on rock E2.50 (Rudabanya Hungary) 132 ELPIDITENa Zr Silicate.Quite obvions red-brownmass...Arsenopyrite and Pitticite (bro~m)(llagyborzsony,lorth Hungary ½ ins E3 1 x ½ E6 133 FLORE!CITE (Ce) Ce Al PO/...Best seen with X 10 ~ag. (Sopron, SopronMountais Hungary) lxlins E4.50 248 GADOLINITE (Ce La Nd Y) F Be...pure d~rk brownmetallic (Herbb E2 Hine, Powhatton County Virginia USA) lem E6 • , * 0 • 1 • 068...with other Cu minerals on matrix. (30'level Gold Hill Mine Utah USA) lem E4 309 PLANCHEITE Cu/8 Si/8 0/22 |
 | | Journal (article/letter/editorial) |
| fact that from time immemorial the Hindus in this district have found diamonds on the surface of the soil...in the deeper beds of slate of t h e Balsfjord group between the lakes Sagvand and Tagvand. The rock...of a colourless transparent mineral of the pyroxene group and a rhombohedra1 carbonate. The microscopic...microscopic and chemical examination of the rhombic pyroxene prove i t to be bronzite, and the carbonate is found...from lttezbanya gave a niiueral of the meionite group chemically resembling melilite, with positive double |
 | | Report (issue) |
| .......................................... 30 Pyroxene ................................................................... _.................... .. Phonolite..................................................................... He)J's Ha1f·Acre, Natrona County .................................................Petrified tree trunk, near Frontier Creek, Fremont County...................... Gneiss.....................mineral in question, or to at least place it in a group of those with similar characteristics. Color Color |
 | | Book (edition) |
| ROCK-FORMING MINERALS The Silica Group The Felspar Group The Felspathoid Group 73 - ' - - - . - - ...Amphibole Group The Pyroxene Group The Olivine Group The Mica Group The Scapolite Group The Garnet Group The...Tourmaline Group The Epidote Group The Phosphate and Fluoride Group The Iron-Ore Group The Spinel Group The...Zircon Group The Titanic Acid Group The Carbonate Group The Zeolite Group The Chlorite Group - . -...it ; the granite-massifs of the Christiania district are laccoliths rather than bathyliths in Suess' |
 | | Report (volume) |
| for sand and gravel, no single commodity tn this group has a total value of more than $100 million ; no...had been recently found in the Tenmile district, Summit County. In his booklet, which today would be classed...feldspar, and mica, occur in some form in every county in the State. Among mineralogists, Colorado is...the world. The tellurium minerals are one such group. Many geologists, mineralogists, and mining engineers...yielded more than $400 million in gold. Another large group of minerals for which Colorado ore deposits are |
 | | Report (issue) |
| [Bulletin 18 SILICATES - Tektosilicates Feldspar Group (Orthoclase) (Microcline) (Anorthoclase) (Albite)...(Penninite) (Clinochlore) Stilpnomelane Chloritoid Pyroxene Group (Enstatite) (Hypersthene) (Diopside) (Hedenbergite)...Cordierite - Sorosilicates Hemimorphite Amphibole Group (Cummingtonite) (Grunerite) (Tremolite) (Actinolite)...(Arfvedsonite) (Barkevikite) INTRODUCTION 1965] Garnet Group (Almandite) (Andradite) (Grossu.larite) (Pyrope)...prospects in the lower Ludlow lignites. Harding County: 1. Abemathyite has been identified as a component |
 | | Book (edition) |
| here expresses thanks to the publishers, McGraw-Hill Book Company, Incorporated, for kind permission...factor. Thus if one is studying the geology of a district with close accuracy, and is tracing the history...Silicates-Feldspar group, orthoclase, plagioclases. Feldspathoids, nepheline, leuci te. Pyroxene group, augite,... hypersthene . Amphibole group, actinolite, hornblende. Mica group, muscovite, biotite. Olivine, garnet...groups, the ortho clase group ( including micro cline) and the plagioclase group from albite to anorthite |
 | | Journal (article/letter/editorial) |
| and -undersaturated (mainly phonolites) types. Pyroxene compositions vary from calcic to sodic in most...amphiboles plot. In the kaersutite-bearing peralkaline phonolite of Nganha volcano, however, pyroxenes are rather...rather poor in Na and consequently plot in the pyroxene gap. The low Na content of these pyroxenes is due...crystallization (4 vol.%) after amphibole and before pyroxene. In the Na – (Fe2++Mn) – Mg diagram, trends of...initial ratios (0.7084 and 0.7082), but distinct pyroxene trends in trachytes from Nganha (Adamawa plateau) |
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| Saint-Hilaire pluton 36 Geology of the Poudrette quarry Miarolitic cavities in nepheline syenite Sodalite...progressed well through repeated visits to the operating quarry and collaborations with visiting professionals...chiseling away at the quarry walls. Intrigued, they later ventured into the quarry and discovered what...the search continues; their latest visit to the quarry took place in July 2018. Additions were made to...indeed, the world. This small unassuming hill with a dusty stone quarry on its north flank, which some enthusiastic |
 | | Report (issue) |
| such cases the upper group of three faces will be separated from the lower group. The scalenohedron, Fig...pinacoid c, and the ortho-dome y. Pyroxene: The crystal of pyroxene pictured in Fig. 42 is a combination................................. . 2. FELDSPAR GROUP: Orthoclase . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . 3. FELDSPATHOID GROUP: Leucite ..................... . Nephelite ....... 4. 2.45-2.50 2.55-;-2.65 }roughly 2.5 MICA GROUP: Muscovite .................. . Biotite ....... |
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| (Photo: Wendy St George). Figure9 Arfvedsonite. Group ofcrystalswithin cavity in peralkaline rhyolite...of view is 1.5 mm across). 11 Barile, Thomson Hill, Figure 13 Wangapeka Valley, Nelson. The separate...chlorite schis t , Mount Drow ne, Toaroha Survey District , Westland. (13 x 10 cm). (Photo: Wendy St George)...LIST Acanthite: See Argentite NaFeSip6 Acmite Pyroxene group The synonym aegirine (q. v. ) is the name n...correct name (Morimoto 1988). Actinolite Amphibole group �(Mg,Fe)sSip22(OH)2 Figure 4 Actinolite is intermediate |
 | | Book (edition) |
| swell and emit bubbles (zeolite group, epidote group, scapolite group), some shed flakes (vermiculite...mineral is part of an isostructural mineral group, the group is listed in parentheses after the mineral...class: Almandine, Silicates (nesosilicates, garnet group). A specific problem is posed by the silicates,...occurs solely at the apices of the tetrahedral 4 group [SiCU] ", and the differentiation of the groups...with two tetrahedra joined by a 6 vertex forming a group [SJ207] "; these groups are coordinated with cations |
 | | Corporate Document (Series) |
| Geology and major deposits, Heazlewood mineral district ... Main mineral locations and 1:100 000 scale...72 variety or invalid names, and 36 series and group names. All entries in the 1969 catalogue have been...least one sample so-labelled is probably from Broken Hill, NSW. Catalogues of the major mineral finds have...Cambrian to Early Devonian sedimentary rocks; Mathinna Group Early Cambrian al/octhons: Ullramafic-mafic complexes...Cleveland tin deposit, Avebury nickel mine, Colebrook Hill copper-bearing axinite skarn and Mt Ramsay tungsten |
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| felspathoids (leucite, nepheline etc.) belong to the light group; these are silicates of Al with K, Na and Ca. Amongst...the minerals of the amphibole group (hornblende) and the pyroxene group (augite), and olivine, which are...ground mass. The small group of dyke rocks also belongs to the igneous group. One frequently comes across...occurs in volcanic rocks (trachyte (page 55/1), phonolite). Adularia, which is colourless or white, is found...) 36 1-4 Felspathoids arise in a particular group of rocks, the so-called alkali rocks. They are found |
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| felspathoids (leucite, nepheline etc.} belong to the light group; these are silicates of Al with K, Na and Ca. Amongst...the minerals of the amphibole group (hornblende) and the pyroxene group (augite), and olivine, which are...ultrabasic int. basic ultrabasic \rare) Phonolite Leucitetrachyte (glassy) Volcanic rocks (fine-grained)...Theralite (very rare) ' Nephelinesyenite = = = = = Pyroxene Augite Diallage Orthopyroxene Olivine varying...ground mass. The small group of dyke rocks also belongs to the igneous group. One frequently comes across |
