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Lake Superior Greenstone
Printer-friendly Page
Calumet, MI US
Uploaded By Scott (webmaster)
Uploaded on Tuesday, September 1, 2009 at 10:08:27 PM

Viewed 6170 times
0 upload(s), 0 comment(s), 2 nearby collector specimen(s)


This website or the contributor can't guarantee the information here to be accurate or to be up-to-date, although that is the intention for the data. Illegal activity or property damage is not the responsibility of this website, but each visitor is encouraged to review the Rockhound Code of Ethics. Each website visitor is advised also to consider reference sources listed and outside sources in their research before visiting the location.
Location Type: Public Access
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."
Now On eBay(View More)
EXTRAORDINARY Native Copper Dodecah
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4.8" NATIVE COPPER NUGGET - Keweena
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Native Copper Sheet, Kearsarge Mine
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Google Map: (The GPS marker is only marking the nearest city.)
Follow this Link to Get Google's Directions
Reference Info: http://cash-and-treasures-wiki.travelchannel.com/page/Michigan
Tags: central mine lake superior greenstone chlorastrolite chatlyant turtle-back calumet michigan us highway 41

Photos of Collector Specimens Found in the Same City (View All)

$(KGrHqJHJBQE7)6opB!jBO-gCTpJQQ~~60_57.JPG
PAIR OF COPPER REPLACEMENT AGATES,C&H # 21 MINE,HOUGHTON CO.MICHIGAN
20200606054657_17.jpg
Lot of 9 Michigan Native Copper cleaned Houghton Keweenaw Calumet Phoenix
20200818194719_984.jpg
Calumet Michigan Mining Copper Ashtray Keweenaw Peninsula souvenir
...View More...


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Houghton County Memorial Airport, MI
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