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enter image description hereenter image description here This rock was picked up this summer at High Rock in Keeweenaw Co. MI. I'm sure it's basalt, but is odd the aggregate when chipped is tan to white inside and contain a lot of tiny crystals. The reddish brown seems to be a coating holding it all together.A cut ground and polished image was added. enter image description hereenter image description here

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  • $\begingroup$ Can you show a picture of how it looks from the inside? $\endgroup$ – Gimelist Dec 26 '18 at 10:30
  • $\begingroup$ I will cut it Tuesday and post a photo. $\endgroup$ – Shoop Dec 31 '18 at 0:28
  • $\begingroup$ I'M not sure why my photos are upside down. $\endgroup$ – Shoop Jan 2 at 0:55

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