Provenite

Mount Antero

Natural outcropDraft data

38.6741° N, 106.2462° W · ± 1 km

Aquamarine and Beryl from Colorado, United States, with photos of specimens from this locality.

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Minerals found here

AquamarineBeryl

Aquamarine at Mount Antero

Small terminated aquamarine crystal 1.7 cm long from Mount Antero, Chaffee County, Colorado.
Small terminated aquamarine crystal 1.7 cm long from Mount Antero, Chaffee County, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Four loose pastel blue aquamarine crystals up to 2.5 cm from Mount Antero, Colorado.
Four loose pastel blue aquamarine crystals up to 2.5 cm from Mount Antero, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Gemmy terminated aquamarine crystal 4.1 cm long from Mount Antero, Colorado.
Gemmy terminated aquamarine crystal 4.1 cm long from Mount Antero, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Complete, lustrous aquamarine crystal about 3.4 cm from Mount Antero, Colorado.
Complete, lustrous aquamarine crystal about 3.4 cm from Mount Antero, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Large aquamarine crystal about 5.4 cm from Mount Antero, Colorado.
Large aquamarine crystal about 5.4 cm from Mount Antero, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
Be₃Al₂Si₆O₁₈
Morphology
Terminated prismatic crystals, single or as loose crystals
Typical size
About 1.5-5.5 cm
Color / luster
Pastel to medium blue, glassy, gemmy
Availability
Unknown

Sources: SRC-723 SRC-747 SRC-266

About Aquamarine →

Beryl at Mount Antero

Three water-clear colorless beryl (goshenite) crystals with sharp terminations from Mount Antero, Colorado.
Three water-clear colorless beryl (goshenite) crystals with sharp terminations from Mount Antero, Colorado.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
Be₃Al₂Si₆O₁₈
Morphology
Prismatic crystals with sharp terminations, from miarolitic cavities
Typical size
Crystals to a few cm
Color / luster
Colorless (goshenite) to light blue (aquamarine), lustrous

Sources: SRC-723 SRC-726

About Beryl →

Geology of the locality

Region
Colorado
Country
United States

Summit coordinates from Wikipedia; the collecting sites lie on the upper slopes of the mountain (Chaffee County). Known for one of the highest concentrations of aquamarine in the US.

Sources: SRC-723

Sources

  1. SRC-723 · Website
    Mount AnteroWikipedia contributors · Wikipedia
  2. SRC-747 · Website
    File:Beryl-264028.jpgRobert M. Lavinsky · Wikimedia Commons
  3. SRC-266 · Book
    Handbook of Mineralogy - BerylAnthony, J.W.; Bideaux, R.A.; Bladh, K.W.; Nichols, M.C. · 2001 · Mineralogical Society of America / Mineral Data Publishing
  4. SRC-726 · Website
    File:Beryl-40491.jpgRobert M. Lavinsky · Wikimedia Commons (dealer label)

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.