The Nittany Lion looks out from a 
Central Pennsylvania doubly terminated quartz crystal.  Artwork © John Passaneau.
Nittany Mineralogical Society, Inc.
State College, Pennsylvania

Eastern Federation of Mineralogical and Lapidary Societies logo

American Federation of Mineralogical Societies logo
   HOME PAGE

   LINKS

NMS display case at Penn State Earth & Mineral Sciences Museum and Art Gallery

Fluorite:
Specialization in mineral collecting

The hobbyist mineral collector faces a dilemma: there are over 5500 minerals recognized by the International Mineralogical Association. Very few individuals will ever be able to collect them all. One solution to assembling a satisfying collection is specialization - limiting one’s scope of collecting. Examples of such limits include:
  • one or a few related mineral species
  • single crystals
  • color
  • chemistry
  • location - from a single site to a mining district, state, country, or region
  • behavior, such as ultraviolet fluorescence
This display is an example of a specialized collection of one species, fluorite. Also known in industry as fluorspar, fluorite is calcium fluoride, CaF2. Mindat.org has fluorite data and localities and a gallery of fluorite photographs.
Colors

Crystal Forms and Cleavage

Fluorite crystallizes in the cubic system, with the most common form being a cube, although octahedra and other forms do occur. It has perfect cleavage in four directions, making it relatively easy to cleave octahedra from a larger mass.
Zoning

Fluorite in Pennsylvania

T-shirts in Galapagos Blue and Texas Orange
NMS has in stock T-shirts in Galapagos blue, Texas orange (both shown here) and royal blue.


A station at our Minerals Junior Education Day
A station at our Minerals Junior Education Day


Celestine crystal cluster 2016: CELESTINE: Pennsylvania State Mineral?


Collecting in a quarry
Collecting crystals in a quarry


Five different posters
We have 2013 (and other) posters for sale!

©2020 Nittany Mineralogical Society, Inc.      Main page last modified 2 April 2020      webmaster