Provenite

Sir James Mine (Sir James Pit)

MineClosedDraft data

48.0432° N, 84.6735° W · ± 1 km

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

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Minerals found here

Siderite

Siderite at Sir James Mine (Sir James Pit)

Siderite is here a rock-forming ore mineral of Archean banded iron formation, not a display-crystal occurrence.

Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 1 of a series).
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 1 of a series).
Photo: James St. John · CC BY 2.0 · Source
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 2 of a series).
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 2 of a series).
Photo: James St. John · CC BY 2.0 · Source
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 3 of a series).
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 3 of a series).
Photo: James St. John · CC BY 2.0 · Source
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 4 of a series).
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 4 of a series).
Photo: James St. John · CC BY 2.0 · Source
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 5 of a series).
Siderite-hematite-quartz banded iron formation at the abandoned Sir James Pit near Wawa, Ontario (photo 5 of a series).
Photo: James St. John · CC BY 2.0 · Source
Formula
FeCO₃
Morphology
Massive, recrystallized siderite forming banded iron formation
Color / luster
Dark, brown-weathering rock
Associated minerals
Hematitequartzpyritechert
Availability
Unknown
History
Mined by open pit for iron ore from 1958 to 1967; earlier known as Siderite Hill.

Sources: SRC-588 SRC-601

About Siderite →

Geology of the locality

Setting
Neoarchean carbonate-facies (siderite) iron formation of the Michipicoten iron range (Eleanor Iron Range), Wawa Subprovince; greenschist-facies metamorphism.
Host rock
Siderite iron formation; felsic tuff footwall; mafic to intermediate lava hanging wall
Region
Ontario
Country
Canada

Open pit worked by Algoma Ore Properties from 1958 to 1967; ore of about 34% Fe with siderite as the ore mineral. Coordinates from the Ontario Mineral Inventory (open-pit point).

Sources: SRC-588

Sources

  1. SRC-588 · Database
    Sir James Dunn Mine (MDI42C02SE00013), Ontario Mineral InventoryOntario Geological Survey · Ontario Ministry of Mines - GeologyOntario
  2. SRC-601 · Website
    File:Siderite-hematite-quartz banded iron-formation (BIF) (Helen Iron-Formation, Neoarchean, 2696-2749 Ma; Sir James Pit, Eleanor Iron Range, Ontario, Canada) 10 (48069938078).jpgJames St. John · 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.