Guide to
Guide to Rocks and Minerals of Illinois
作者：Illinois State Geological Survey
体例：题 章数：55
字数：61,354 来源：Project Gutenberg
版本与结构
- 来源版本
- 本站收录 1 个来源：Project Gutenberg（61,354 字）。
- 分章依据
- 按「题」标记切分为 55 题（Gutenberg 卷册标记）。
- 篇幅分布
- 平均每题 1,115 字。
- 原文溯源
cache/epub/66308/pg66308.txt（Project Gutenberg）
章节目录
共 55 题- Printed by Authority of the State of Illinois
- DESCRIPTION OF ROCKS AND MINERALS
- MINERALS
- ROCKS
- GRANITE (1)
- GABBRO (2)
- PORPHYRY (3)
- BASALT (4)
- PERIDOTITE (5)
- GNEISS AND SCHIST (6)
- CONGLOMERATE (7)
- SANDSTONE (8)
- QUARTZITE (9)
- SHALE (10)
- CLAY (11)
- LIMESTONE (12)
- PEAT (13)
- COAL (14)
- PETROLEUM (15)
- GLACIATED PEBBLES (16)
- SILICA SAND (17)
- MOLDING SAND (18)
- TRIPOLI (19)
- FULLER’S EARTH (20)
- QUARTZ (21)
- FELDSPAR (22)
- MICA (23)
- CALCITE (24)
- FLUORITE (25)
- GYPSUM (26)
- CHERT (27)
- PYRITE AND MARCASITE (28)
- LIMONITE (29)
- SPHALERITE (30)
- GALENA (31)
- CONCRETIONS (32)
- GEODES (33)
- ANIMAL FOSSILS (34)
- PLANT FOSSILS (35)
- KEYS FOR IDENTIFICATION OF COMMON ILLINOIS ROCKS AND MINERALS
- MINERAL IDENTIFICATION KEY
- B. Hardness greater than 2.5 but not greater than 6.5
- D. Hardness greater than 5 but not greater than 7
- E. Hardness greater than 7 (cannot be scratched by quartz)
- ROCK IDENTIFICATION KEY
- I COARSE-GRAINED ROCKS
- II FINE-GRAINED ROCKS
- III ORGANIC ROCKS (DARK COLORED)
- EQUIPMENT FOR COLLECTING
- 1. Hammer (bricklayer’s) with one chisel or pick head.
- 2. Cold chisel about 6 inches long with an edge about ½-inch wide.
- 4. Magnifying glass or hand lens—10 power is probably most useful.
- 9. Heavy gloves and goggles to protect hands and eyes.
- EDUCATIONAL EXTENSION PROGRAM
- Transcriber’s Notes