Lake Superior Greenstone
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Details: The link for the travel channel's page is broken. Much of the info comes from Bill Reynolds, a columnist with Rock and Gem Magazine. Here is what the link used to say: "General description: In 1972, chlorastrolite a variety of pumpellyite became the official State Gem for Michigan. Chlorastrolite is a beautiful green mineral with a chatlyant "turtle-back" pattern.
Handy to bring along: 1. Rock bag 2. Hand tools 3. Rock hammer
Helpful notes to newcomers Look for the dark green, small round or almond shape nodules in country rock. Sometimes they will have weathered out of the rock and can be found lying on the ground."
Directions: The link used to say: "How to get there: The Central Mine, located just off US 41 north of Calumet, has been the source of some of the largest greenstones."
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Google Map: (The GPS marker is only marking the nearest city.)
Tags: central mine lake superior greenstone chlorastrolite chatlyant turtle-back calumet michigan us highway 41
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