id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
4768	Shell Union Oil Corporation	Let's Collect Rocks and Shells			.txt	text/plain	5478	486	80	rocks and shells. Shell Oil Company's interest in the subjects comes from its Shell has scientists who work with rocks all day and laboratories filled with rock, mineral and crystal specimens. True molluscan shells come in two main varieties: BIVALVES and covers the open end of the shell like a trap door. look just like rocks, and they stick so tightly to the big stones Most shells of interest to the collector are found in the sea-.And there it is, the fascinating hobby of shell collecting. Many valuable minerals are found in veins running through rock. 3. ROCK-FORMING MINERALS. Other rock-forming minerals are the large family of micas, with names A rock may be made almost entirely of one mineral or of more than If you want to collect rocks and minerals just for the sake of Get books and magazines on rocks and minerals.	./cache/4768.txt	./txt/4768.txt