"But she also identified epidote. This news perked me up a little. Epidote is a pale green mineral found only in metamorphic rocks. If you compare rocks to music, sedimentary rocks are like major keys, metamorphic rocks are like minor keys. They have more mystery."
A nice discussion of sand in the linked blog...
Feel free to be the first
Please review the linked page for context.
If you can think of something better than this,
please add it to the database