Object ID:
2011.18.1
Collection:
Natural History
Object Name:
Iron Ore
Dimensions:
H-5.8 W-6.8 L-7.1 cm
Description:
Banded Iron Formation which consists of alternating bands of red chert (jasper; cryptocrystalline quartz - SiO2) and hematite (iron oxide - Fe2O3).
Other Name:
Banded hematite and jasper
VE Exhibit Label 1:
Jasper Knob is a bald-topped hill within the city of Ishpeming, Michigan composed entirely of jaspilite, or more properly, banded hematite and jasper. Jasper is a kind of dense, opaque quartz with crystals too small to be visible. Michigan jasper is a deep red. This huge outcrop, locally touted as "the world's largest gemstone," forms a dramatic knob with a good view on the southeast edge of Ishpeming.
Rock Type:
Sedimentary
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