 | | Report (issue) |
| General statements 212 Native elements 212 Graphite Occurrence 212 Alterations 21 2 The sulphides ...marcasite 213 Occurrence 213 Alterations 214 216 fluorides Fluorite _ 216 Occurrence 216 Alterations...Alterations 216 The oxides 217 21 7 Quartz Occurrence 21 7 CONTENTS. MINERALS CHAPTER V. Section...Modifications 220 Tridymite Occurrence 220 Modifications 220 221 Opal Occurrence 221 Modifications 221...223 Corundum 223 Occurrence 223 Alterations 223 Hematite 225 Occurrence 225 Alterations 226 |
 | | Book (edition) |
| aluminum oxides and hydroxides such as boehmite and gibbsite; bauxite is the most significant aluminum ore...give a play of colors similar to oil on water. Gibbsite layer. A sheet of Al(OH)6 octahedra in a layered...characterized by the radical (OH) –; for example, gibbsite, Al(OH)3. Hypothesis. A proposed explanation for...Mineralogy. The study of minerals, their formation, occurrence, properties, composition, and classification...single nonmetallic element; principally sulfur, graphite, and diamond. Nonmetallic (element). Elements |
 | | Book (edition) |
| Chapter 11. Elements to Hydroxides.185 Elements: Graphite. Sulfides: Sphalerite—Pyrite—Pyrrhotite—Chalcopyrite...vskite. Hydroxides: Diaspore—Brucite—Boehmite—Gibbsite—Cliachite—Limonite. Chapter 12. Carbonates, Sulfates...Interstices (around holes in the section) contain gibbsite. Fig. 8-4. ( X33) Cellular structure of wood preserved...Interstices between pisolites may be filled with gibbsite forming a fine-grained gray-andwhite mosaic of...pyroxene, aragonite, amphibole, lazulite, and gibbsite are frequently found in twin crystals. Fig. 8-19 |
 | | Book |
| Group), the only sig nificant type of occurrence is the graphite deposit at Polovragi in the Parâng Mts...deposits are also present in the Baia Mare mining district (ROM). The latter, however, is Pb.Zndominated...major tv pes of mineral deposits or min eral occurrence arc verv adequately' represented in the Carpathians...penetrate them, especially at the Ciucaru Mare occurrence. Ac cessory millerite and secondary magnetite...Cu. Co. Fe or Pb and Zn. The Măgureaua Vaţei occurrence does not obey this rule. First, the skarn assemblages |
| | Book |
| polymetamorphic evolution and similar, but less significant occurrence in the Arie§ Valley of the Apuseni Mts. at Salciua...o nly significant type o f occurre nce is the graphite de posit at Polovragi in the Parang Mts. The Upper...the major types of mineral deposits or mineral occurrence are very adequately repre ented in the Carpathian...IPapp. 1997. in press]. The genetic types of ore occurrence. mclude practically all the main mineral producing...lllav ·ky. 19791 ummanzed the types of mmeral occurrence and deposits in the Carpathians. IUduba,a et |
 | | Report (volume) |
| the copper minerals.......................... Occurrence of the copper minerals.........................the silver minerals.......................... Occurrence of the silver minerals.........................compounds...................................... 135 Occurrence of the lead minerals...........................compounds...................................... 140 Occurrence of the zinc minerals...........................iron minerals............................. 143 Occurrence of the iron minerals........................ |
 | | Report (volume) |
| sulphide zones._ _ ______________________ 172 Occurrence of the copper minerals_________________ 176 Copper-bearing...Arizona__________________________ 208 Note on the Bisbee district, Arizona, by F. L. Ransome_ 209 Globe and Miami...Mexico____________________ 22J Burro Mountain district, New Mexico_____________ 222 , Cananea, Mexico...Snowstorm lode, Coeur d'Alene district, Idaho__ _ 235 Encampment district, Wyoming_____________;___ 236...Queen of Bronze mine, Oregon_________ Boundary district, British Columbia : ___ 241 241 Vancouver, |
 | | Book |
| 7 Temperature Distribution in the Crust 8 The Occurrence of Magma in the Crust 8 ix x Contents TWO...necessarily applicable at other points. 0 THE OCCURRENCE OF MAGMA * IN THE CRUST 'rhe relevant data are...monzonite, basalt etc. A statement on the mode of occurrence of the less common varieties is now in order...composition. Alkali rocks can be divided by their occurrence into two groups, those that are associated with...Zealand and New Caledonia (110 by 40 km). The occurrence of carbonatites brings us back to the field of |
