minerals – Page 3 – Emily Zawacki, Ph.D.

March 13, 2014August 15, 2018 itssedimentary

Crystal Cave diorama in Coors Mineral Hall at the Denver Museum of Nature & Science. Depicts a selenite and calcite grotte form the Naica Crystal Cavern in El Petosi, Mexico Image by author

mineralogy

Rhodochrosite

March 11, 2014August 15, 2018 itssedimentary

Rhodochrosite - MnCO3 The Alma King, largest known rhodochrosite crystal; state mineral of Colorado. Specimen from Denver Museum of Nature and Science; photo by author

mineralogy

Common minerals to know

March 7, 2014August 15, 2018 itssedimentary

Here are some common minerals whose names and formulas are good to know, along with some of their properties! (In rows, left to right; H=hardness, tested in lab using Mohs hardness scale) 1) Halite (NaCl) – H=3.5; it tastes salty! (yes, lick it) 2) Fluorite (CaF2) – H=4; ranges from transparent, to purple, to blue 3) Sylvite… Continue reading Common minerals to know