Provenite

Jackson Crossroads Amethyst Mine

MineActiveDraft data

33.8869° N, 82.8572° W · ± 1 km

Amethyst from Georgia, United States, with photos of specimens from this locality.

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Minerals found here

Amethyst

Amethyst at Jackson Crossroads Amethyst Mine

Amethyst pockets that also yield yellow calcite scalenohedra and rare lokkaite-(Y)

Cluster of intergrown bright purple amethyst crystals with glassy luster from Jacksons Crossroads, Georgia.
Cluster of intergrown bright purple amethyst crystals with glassy luster from Jacksons Crossroads, Georgia.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Complete, all-around amethyst cluster about 11 cm wide from the Jacksons Crossroads mine, Georgia.
Complete, all-around amethyst cluster about 11 cm wide from the Jacksons Crossroads mine, Georgia.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Cluster of large amethyst crystals on matrix surrounded by colourless quartz, from Jacksons Crossroads, Georgia.
Cluster of large amethyst crystals on matrix surrounded by colourless quartz, from Jacksons Crossroads, Georgia.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
SiO₂
Morphology
Clusters of intergrown crystals from pockets, some large crystals on matrix
Typical size
Cabinet specimens of about 6 to 11 cm
Color / luster
Bright purple with glassy luster (dealer descriptions)
Associated minerals
Calcite (yellow scalenohedra to 1 cm)lokkaite-(Y)lepidocrocitequartz
History
Described in a 2008 update on the Treasure Chest pockets and in later articles in 2013 and 2015

Sources: SRC-423 SRC-424 SRC-430

About Amethyst →

Geology of the locality

Setting
Regional mapping shows metadacite of Paleozoic-Precambrian age with Devonian-Silurian intrusive rocks nearby; amethyst occurs in open cavities (pockets)
Region
Georgia
Country
United States

About 1.2 km WSW of Jacksons Crossroads, Wilkes County. Coordinates from the Mindat locality page; host rock of the pockets is not stated there.

Sources: SRC-423

Sources

  1. SRC-423 · Database
    Jackson Crossroads Amethyst Mine, Jacksons Crossroads, Wilkes County, Georgia, USAMindat.org contributors · Mindat.org
  2. SRC-424 · Article
    The Treasure Chest Pockets: An Update on the Jacksons Crossroads Amethyst Mine, Wilkes County, GeorgiaGeffner, P. · 2008 · Rocks & Minerals 83(6), 550-552
  3. SRC-430 · Website
    Wikimedia Commons file pages: Quartz-122889.jpg, Quartz-164076.jpg, Quartz-167899.jpgRobert M. Lavinsky (photographer; text by dealer) · Wikimedia Commons

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.