ID Chart - MOHS Hardness Scale - Rock and Mineral Collection
$19.99
Great earth science resource - Chart with samples on the Mohs Hardness Scale
Includes numbers 1-9 (all except diamond)
Specific samples included are Talc, Gypsum, Calcite, Fluorite, Apatite, Feldspar, Quartz, Topaz, Corundum
Wonderful for Science Fair presentations on Rocks, Minerals or Geology
The chart measures 8 1/2" x 5 1/4" with samples affixed to a sturdy card with ziplock protective plastic covering
Includes 9 genuine rocks/minerals/gemstones that are one through nine on the Mohs Hardness Scale. The Moh's scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science.
Mineral Collection Activity Kit - 150+ Pieces - with Educational Info and ID Chart - Bonus Geode & Spinosaurus Dino Tooth and much more....
$28.95
Over 150 Specimens! Genuine Emerald, Arrowheads, Amethyst Crystals, Citrine Crystals, Quartz Crystal, Loads of Beautifully Polished Brazilian Agates, Fossil Shark Teeth, Selenite Rose, Flourite, 2 Geodes And SPINOSAURUS DINOSAUR TEETH. All specimens can be identified on our easy to use online ID Chart. Complete with educational guide on minerals. Awesome Rock and Mineral gift, homeschool or at home learning activity.
