Rock Daycare Wiki



Welcome to the Rock Daycare Wiki
Hello Rocktopian! Welcome! We hope you enjoy your stay!

-Rock Day-Care STAFF

History | Topic
In geology ,  rock is a naturally occurring solid a ggregate of one or more minerals  or mineraloids . For example, the common rock granite  is a combination of the q uartz, f eldspar and biotite  minerals. The Earth's outer solid layer, the lithosphere , is made of rock.

The first Pet Rocks were ordinary gray stones bought at a builder's supply store. They were marketed like live pets , in custom cardboard boxes, complete with straw and breathing holes for the "animal."  The fad lasted about six months, ending after a short increase in sales during the Christmas  season of December 1975. Although by February 1976 they were discounted due to lower sales, Dahl sold 1.5 million Pet Rocks and became a millionaire.

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