Riverton, Wyoming, Mineral and Gem Society

Riverton, Wyoming, Mineral and Gem SocietyRiverton, Wyoming, Mineral and Gem SocietyRiverton, Wyoming, Mineral and Gem Society
  • Home
  • Membership
  • Calendar of Events
  • Contact
  • Wyoming Rockhounding EDU
    • Public Land Rockhounding
    • Fossil Restrictions
    • Collect on Public Lands
    • WY Rocks & Minerals Book
  • Agates
    • Angel
    • Lysite
    • Snakeskin
    • Sweetwater
    • Wiggins Fork Moss
  • Petrified Wood
    • Blue Forest
    • Eden Valley
    • Ice Point
    • Wiggins Fork
  • Other Chalcedony
    • Banded Iron
    • Chert Misc.
    • Wyoming Prairie Agate
    • Limb Casts
    • Opal
    • Jasper
  • Fossils
    • Kemmerer Fish
    • Other Vertebrates
    • "Turritella Agate"
    • Other Invertebrates
    • Stromatolite; Other Algae
  • Other Local Minerals
    • Beryl
    • Corundum
    • Garnet
    • Lepidolite
    • Peridot
    • Sillimanite
    • Tourmaline
  • Jade
    • Apple Green
    • Black
    • Olive
    • Snowflake
  • More
    • Home
    • Membership
    • Calendar of Events
    • Contact
    • Wyoming Rockhounding EDU
      • Public Land Rockhounding
      • Fossil Restrictions
      • Collect on Public Lands
      • WY Rocks & Minerals Book
    • Agates
      • Angel
      • Lysite
      • Snakeskin
      • Sweetwater
      • Wiggins Fork Moss
    • Petrified Wood
      • Blue Forest
      • Eden Valley
      • Ice Point
      • Wiggins Fork
    • Other Chalcedony
      • Banded Iron
      • Chert Misc.
      • Wyoming Prairie Agate
      • Limb Casts
      • Opal
      • Jasper
    • Fossils
      • Kemmerer Fish
      • Other Vertebrates
      • "Turritella Agate"
      • Other Invertebrates
      • Stromatolite; Other Algae
    • Other Local Minerals
      • Beryl
      • Corundum
      • Garnet
      • Lepidolite
      • Peridot
      • Sillimanite
      • Tourmaline
    • Jade
      • Apple Green
      • Black
      • Olive
      • Snowflake

Riverton, Wyoming, Mineral and Gem Society

Riverton, Wyoming, Mineral and Gem SocietyRiverton, Wyoming, Mineral and Gem SocietyRiverton, Wyoming, Mineral and Gem Society
  • Home
  • Membership
  • Calendar of Events
  • Contact
  • Wyoming Rockhounding EDU
    • Public Land Rockhounding
    • Fossil Restrictions
    • Collect on Public Lands
    • WY Rocks & Minerals Book
  • Agates
    • Angel
    • Lysite
    • Snakeskin
    • Sweetwater
    • Wiggins Fork Moss
  • Petrified Wood
    • Blue Forest
    • Eden Valley
    • Ice Point
    • Wiggins Fork
  • Other Chalcedony
    • Banded Iron
    • Chert Misc.
    • Wyoming Prairie Agate
    • Limb Casts
    • Opal
    • Jasper
  • Fossils
    • Kemmerer Fish
    • Other Vertebrates
    • "Turritella Agate"
    • Other Invertebrates
    • Stromatolite; Other Algae
  • Other Local Minerals
    • Beryl
    • Corundum
    • Garnet
    • Lepidolite
    • Peridot
    • Sillimanite
    • Tourmaline
  • Jade
    • Apple Green
    • Black
    • Olive
    • Snowflake

Corundum

General Description

Corundum is the aluminum oxide that gives us such gems as ruby and sapphire in its very rare and purest crystalline forms. Lapidaries will recognize this ruby-fuchsite association (sometimes called "watermelon ruby") as a popular ornamental material available on the internet from India and other locales.  Click on above images for captions.

History

None listed for Central Wyoming

Uses

Lapidary and display

Abundance

Limited locations in Fremont County and a few other places in Central Wyoming.

Quality

Various qualities, but few are gem grade.

Location/Restrictions

It is reported from a few locations in Fremont County, notably in metamorphic outcrops above Beaver Rim. There are a couple of ruby claims in the Stampede Meadows area, but it is doubtful whether gem-grade material was ever recovered from them. Corundum with a pale blue cast, i.e., “sapphire,” has been found at a location a few miles from Sweetwater Station where there is an old prospect hole, but it is far from being gem grade. Both of these corundum occurrences are found in a greenish schist, in which the corundum is embedded as nodules. The reddish-violet “rubies” are typically surrounded by a rim of bright green fuchsite, a micaceous mineral which might be a main constituent of the schist itself. 

Publications/Links

Gemstones and Other Unique Minerals and Rocks of Wyoming

Consult Hausel and Sutherland, Gemstones and Other Unique Minerals and Rocks of Wyoming, for more information.

Publication 2

more to come

Publication 3

more to come

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