types-of-rocks
Geology

Classes of Rocks

Table of ContentsArrangement of Sedimentary RocksFossilsLife Eras Three Classes of Rocks.—The rocks are divided into three great classes: Sedimentary rocks, made of fragments of older

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Mountain top
Geology

Mechanical Weathering of Rocks

Table of ContentsWeathering ForcesMechanical ActionGeneral Effects of WeatheringGeneral Results of Weathering Weathering Forces Under this head are grouped a number of agencies that have their

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Glacier
Geology

Landforms Created by Glaciers

Table of ContentsOrigin of GlaciersMotion of GlaciersWork of GlaciersWork of Glacial StreamsThe Glacial PeriodPractical Results Origin of Glaciers In temperate and cold climates, and even

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Gully and side gullies
Geology

Types of Formations Caused by Erosion

Table of ContentsForces Causing ErosionChanges Caused by Running WaterRapids and WaterfallsNatural BridgesRiver TerracesUnderground Rivers, CavesLeveling EffectUnderground WaterErosion by WavesEffects of Waves on Rocky ShoresResultant Effects

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Conglomerate boulder
Geology

Origin of the Earth

Table of ContentsThe EarthOrigin of the EarthStructure of the EarthWeight of the EarthSurface of the Earth The Earth As a preparation for the systematic study

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pipe for catskill aqneduct system lead smelting
Gold Extraction

Mechanical Roasting in Silver-Lead Smelting

Table of ContentsRECOVERY OF OLD SPEISS BOTTOMSUSE OF THE BROWN-O’HARA FURNACESINTER SPEEDING UP BLAST-FURNACE WORKSteel Pipe Concrete Jacketed and Concrete LinedHoover and Wheeler at Chemical

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mineral-identification-table
Geology

Mineral Identification Tables

Table of ContentsHow to Use the Mineral Identification TablesMINERALS OF METALLIC LUSTERA.  Yellow or Yellowish ColorB. Red or Reddish ColorGray ColorWhite ColorBlack ColorMINERALS OF NON-METALLIC

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Barite Crystals
Geology

Sulphate Mineral Group

Table of ContentsBarite or BarytesCelestiteAnglesiteGypsumEpsomite or Epsom SaltMirabilite or Glauber’s SaltWolframite, or WolframScheelite The group of sulphates correspond to sulphuric acid, H2SO4. In the list

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Apatite Crystals
Geology

Phosphate Mineral Group

The Phosphate Mineral Group includes a number of the rarer minerals and apatite. Pitchblende or Uraninite is of Color, pitchy black, greenish, or brownish black; powder,

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