Search
Now showing items 21-30 of 77
Minnesotaite
(St. Croix Rockhounds, Stillwater, MN, 1990)
Dense as a rock
(St. Croix Rockhounds, Stillwater, MN, 2001)
Treacherous mineral
(St. Croix Rockhounds, Stillwater, MN, 2002)
Diamond-wrongs
(St. Croix Rockhounds, Stillwater, MN, 2008)
Lake full of lead
(St. Croix Rockhounds, Stillwater, MN, 1995)
Minnesota kimberlites
(St. Croix Rockhounds, Stillwater, MN, 1991)
Lazulite or Lazurite?
(St. Croix Rockhounds, Stillwater, MN, 1999)
Marcasite - pyrite's evil twin
(St. Croix Rockhounds, Stillwater, MN, 2008)
Greenstones, greenstones and green stones
(St. Croix Rockhounds, Stillwater, MN, 2004)
Moganite - A common mineral with a disapproved name
(St. Croix Rockhounds, Stillwater, MN, 1994)