Provenite

East Coleman Mine

MineActiveDraft data

34.7589° N, 93.0406° W · ± 10 km

Quartz and Rock crystal from Arkansas, United States, with photos of specimens from this locality.

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Minerals found here

QuartzRock crystal

Quartz at East Coleman Mine

Sharp, glassy, fully terminated crystals, often as floaters without a contact point (based on dealer wording on the photo pages only)

Doubly terminated floater quartz crystal perched in a crystal cluster (specimen from East Coleman Mine, Jessieville, Garland County, Arkansas, USA).
Doubly terminated floater quartz crystal perched in a crystal cluster (specimen from East Coleman Mine, Jessieville, Garland County, Arkansas, USA).
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
SiO₂
Morphology
Clusters of clear, terminated points and doubly terminated floater crystals; crystals in the photographed specimens reach about 15 cm
Typical size
Photographed cluster specimens about 14-16 cm across, single crystals to about 15 cm
Color / luster
Colourless to clear with glassy luster
Availability
Commonly available
History
Worked as the Blocker Lead No. 4 Quartz Mine and placed under federal control in World War II; the Coleman family has dug here since the 1930s and Ron Coleman has owned the mine since 1987

Sources: SRC-174 SRC-175 SRC-089 SRC-176

About Quartz →

Rock crystal at East Coleman Mine

Dense cluster of water-clear quartz points rising from a thin matrix plate (specimen from East Coleman Mine, Jessieville, Garland County, Arkansas, USA).
Dense cluster of water-clear quartz points rising from a thin matrix plate (specimen from East Coleman Mine, Jessieville, Garland County, Arkansas, USA).
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
SiO₂
Morphology
Dense cluster of clear gemmy points rising from a thin matrix plate, longest points about 9 cm
Typical size
Photographed specimen about 14.4 x 12.2 x 8.8 cm
Color / luster
Colourless, transparent with glassy luster

Sources: SRC-175 SRC-089

About Rock crystal →

Geology of the locality

Setting
Fissure-filling hydrothermal quartz veins in the Ouachita Mountains quartz belt, formed during the final stage of the Ouachita orogeny roughly 280 to 245 million years ago. The mine is the successor of the Blocker Lead No. 4 Quartz Mine and is now known as the Old or Ron Coleman Mine (other names given on the photo page: West Chance, Dierks No. 4, Geomex).
Type
Hydrothermal
Host rock
Paleozoic sandstone and shale of the Ouachita Mountains (regional host; the exact host at this mine was not confirmed)
Region
Arkansas
Country
United States

Coordinates are NOT for the mine itself: no page I opened gives them. They are those of the Blackman Mine, a neighbouring quartz mine about 4 miles NNE of Jessieville, used as a nearby reference point, hence +/- 10 km. Needs a proper check. The mine is a fee-dig site.

Sources: SRC-174 SRC-175 SRC-089 SRC-176 SRC-177

Sources

  1. SRC-174 · Website
    File:Quartz-153463.jpg (Wikimedia Commons; quartz, East Coleman Mine)Robert M. Lavinsky · 2010 · Wikimedia Commons
  2. SRC-175 · Website
    File:Quartz-153457.jpg (Wikimedia Commons; rock crystal cluster, East Coleman Mine)Robert M. Lavinsky · 2010 · Wikimedia Commons
  3. SRC-089 · Article
    Arkansas quartz crystalsArkansas Geological Survey · Arkansas Geological Survey
  4. SRC-176 · Website
    Quartz MiningEncyclopedia of Arkansas · Encyclopedia of Arkansas (Central Arkansas Library System)
  5. SRC-177 · Database
    Blackman Mine, Jessieville, Garland County, Arkansas, USAMindat.org contributors · Mindat.org

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.