When: 2015-06-16

Collection location: Shambeau Park, Waupaca, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

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Comments

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I agree
By: Jason Hollinger (jason)
2015-06-18 07:35:36 WIB (+0700)

I find this on rock all the time, too.

While most authors agree this one is rarely on rock,
By: Andrew Khitsun (Andrew)
2015-06-18 06:12:10 WIB (+0700)

I have now collected the specimen from granite (this one), quartzite (probably – observation 185034), sandstone (observation 185598), and dolomite (observation 88147).

This one is on granite
By: Andrew Khitsun (Andrew)
2015-06-18 06:06:10 WIB (+0700)