Provenite

Diamond Willow Mine (Pearl Station)

MineActiveDraft data

48.6864° N, 88.6656° W · ± 1 km

Amethyst from Ontario, Canada, with photos of specimens from this locality.

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Minerals found here

Amethyst

On the same specimen

Same specimen Hematite with Quartz

2 specimen photo(s) from this locality show quartz with hematite together. The pairing comes from the photographer's file name and label, so the relationship between the two minerals is not specified.

Amethyst at Diamond Willow Mine (Pearl Station)

Amethyst from a quartz-rich fault breccia in the Sibley Group, with hematite inclusions on some specimens

Cabinet specimen of glassy purple amethyst crystals, the largest 3.1 cm across, from the Diamond Willow Mine near Pearl, Ontario.
Cabinet specimen of glassy purple amethyst crystals, the largest 3.1 cm across, from the Diamond Willow Mine near Pearl, Ontario.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Cluster of lustrous amethyst crystals with rusty-red hematite inclusions from the Diamond Willow Mine, Thunder Bay District, Ontario.
Cluster of lustrous amethyst crystals with rusty-red hematite inclusions from the Diamond Willow Mine, Thunder Bay District, Ontario.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Mounded hemisphere of vivid purple amethyst crystals with hematite staining on the tips, from the Diamond Willow Mine, Ontario.
Mounded hemisphere of vivid purple amethyst crystals with hematite staining on the tips, from the Diamond Willow Mine, Ontario.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
SiO₂
Morphology
Crystals lining vugs in fault breccia; vugs can exceed 1 m and are often filled with dense red clay
Typical size
Single crystals to a few cm (largest crystal on one photographed cabinet specimen 3.1 cm)
Color / luster
Pale to medium purple, with dark purple crystal points in the vugs; rusty-red hematite inclusions on some specimens
Associated minerals
Quartzbarytehematitegalenachalcopyritepyrite

Sources: SRC-417 SRC-418 SRC-427

About Amethyst →

Geology of the locality

Setting
Amethyst-bearing fault breccia at the western end of a kilometre-long breccia zone in the Mesoproterozoic Sibley Group, Nipigon Basin; quartz-rich breccia core with vugs lined by amethyst
Host rock
Fault breccia between Sibley Group mudstone and conglomerate; adjacent altered Archean granite (Algoman)
Region
Ontario
Country
Canada

Also recorded as Noyes North; shares a vein system with the nearby Blue Points mine. Coordinates from the Ontario Mineral Inventory record, converted from DMS.

Sources: SRC-417 SRC-418

Sources

  1. SRC-417 · Database
    Diamond Willow Mine, McTavish Township, Thunder Bay District, Ontario, CanadaMindat.org contributors · Mindat.org
  2. SRC-418 · Database
    Ontario Mineral Inventory record MDI52A10NE00003 (Diamond Willow)Ontario Geological Survey · Ontario Ministry of Mines
  3. SRC-427 · Website
    Wikimedia Commons file pages: Quartz-249303.jpg, Quartz-Hematite-113454.jpg, Quartz-Hematite-275025.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.