Wisconsin Geological Society Contacts
President: Jody Rymaszewski (414)
771-4780
VP/Program: Bob Bialecki (414)
372-9613
Junior Rockhounds:
Show Chairman: Paul Schmidt (414)
771-8668
Business Liason: Margaret
Pearson (414) 464-0781
Bulletin: The Trilobite Editor:
Verna Schmidt pvs@wi.rr.com
Meeting: 7 pm, 2nd Monday,
Sept-June Parish Hall of Immaculate Heart of Mary Church,
(South end, Hall, downstairs), 1212 So. 117th St., West
Allis, WI, 53214
Membership includes the following:
Monthly Meetings- Monthly Newsletter- Lapidary Group- Fossil
Meetings- Mineral Meetings- Annual Show- Lots of fellowship
in a common interest!
Membership is: Single $15.00 per year - Family $20.00 per
year
Mohs Scale
- In 1812 the Mohs scale of mineral hardness was devised by the German mineralogist Frederich Mohs (1773-1839), who selected the ten minerals because they were common or readily available. 1-Talc Talcum powder.
2-Gypsum Plaster of paris. Gypsum is formed when seawater evaporates from the Earth’s surface.
3-Calcite Limestone and most shells contain calcite.
4-Fluorite Fluorine in fluorite prevents tooth decay.
5-Apatite When you are hungry you have a big "appetite".
6-Orthoclase Orthoclase is a feldspar, and in German, "feld" means "field".
7-Quartz
8-Topaz emerald and aquamarine are varieties of beryl with a hardness of 8.
9-Corundum Sapphire and ruby are varieties of corundum. Twice as hard as topaz.
10-Diamond Used in jewelry and cutting tools. Four times as hard as corundum.