 | | Book | | Colour Plates I CY MINERALS Introduction Mineral 3 Tacaunetion Table:Ie. Based pemasly on Mineral...Gemstones: 2 — Red ee a5 ne sq AAUS xm Gemstones: 3 —- Green - ae 5 a ANG) xiv Gemstones: 4- Yellow...for the scale are as follows: 1, talc; 2, gypsum; 3, calcite; 4, fluorspar; 5, apatite; 6, feldspar; 7...window glass has hardness 5, a copper coin hardness 3, and a finger nail about hardness 2. With the aid...Specific Gravity. The number below the line in column 3 of the table gives the specific gravity. An accurate | | | Book | | Iron ores and related ores 4 n Ores: 2 m Ores: 3 IV Minerals illustrating Mohs' scale 53 v Rock-forming... XII Gemstones: 2 - Red 209 XIII Gemstones : 3 - Green 216 XIV Gemstones: 4 - Yellow 225 xv...for the scale are as follows: I, talc; 2, gypsum; 3, calcite; 4, fluorspar; 5, apatite; 6, feldspar; 7...window glass has hardness 5, a copper coin hardness 3, and a finger nail about hardness 2. With the aid...Specific Gravity. The number below the line in column 3 of the table gives the specific gravity. An accurate |  | | Book (edition) | | PLANET 3— AN OVERVIEW Why Study the Earth? Scope of Geology 3 The Mobile Earth Continental Drift 3 Plate...Plate Tectonics 6 Sea-Floor Spreading 3 1 4 Discovering the Earth’s Place in the Universe Exploring...Geological and Geographical Survey 1 CH. 1| PLANET 3—AN OVERVIEW Recent (Holocene) Pleistocene Pliocene...our en- vironment will be described. (See Fig. 1-3.) Geology is concerned both with the processes operating...this area. Photos from CH. 1| PLANET FIGURE 1-4 3—AN OVERVIEW Reconstruction of the ancient continent |
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