Name/Title
Hematite var. JaspilliteEntry/Object ID
2011.57.115Description
Chemical Composition: Fe2O3
Crystal System: Hexagonal System
Description: Common Name: Hematite var. jaspilite
Chemistry: Fe2O3,
Class: Oxides and Hydroxides
Location: Negaunee Iron Formation, Empire Mine, Ishpeming, MI
Description: Small, thick slab with distinct banding. Bands are horizontal with a relative thickness of (.500"-.250"). Color is dark gray to reddish-brown. (earthy tones).
Physical Characteristics:
Jaspillite, or jaspilite, is a chemical rock formed similar to chert, but is generally quite iron rich. It is also known as taconite. Jaspillite is also a mixture of hematite and quartz common in the banded iron formation rocks of Proterozoic and Archaean age in the Canadian shield.Jaspillite is also formed as exhalative chemical sediments in certain lead-zinc deposits, and as a hydrothermal alteration facies around submarine volcanism.
Fracture: Uneven
Grain Size: Medium
Hardness: 6 Orthoclase
Luster: Metallic
Rock Origin: Terrestrial
Rock Type: Sedimentary
Specific Gravity: 5.3
Streak: Blood Red to BrownCollection
Museum Collection of FossilsAcquisition
Accession
2011.57Source or Donor
Museum Collection of FossilsAcquisition Method
Long-term LoanDimensions
Width
2-3/4 inDepth
2-3/8 inLength
3-1/2 inLocation
Location
Container
CenterDrawer
3rd ShelfShelf
Left, LeftWall
NorthRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
PermanentMoved By
Steve MillerDate
August 5, 2011Location
Container
CenterDrawer
3rd ShelfShelf
LeftCabinet
Case # 42Wall
NorthRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
Permanent
