Hematite var. jaspilite

Object/Artifact

-

Crater Rock Museum

Name/Title

Hematite var. jaspilite

Entry/Object ID

2011.57.114

Description

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 decernable banding, very tightly compressed. Colors are 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 Brown

Collection

Museum Collection of Fossils

Acquisition

Accession

2011.57

Source or Donor

Museum Collection of Fossils

Acquisition Method

Long-term Loan

Dimensions

Width

2-1/2 in

Depth

1-1/4 in

Length

4-1/4 in

Location

Location

Shelf

CS-H-7

Room

Curation Storage

Building

Crater Rock Museum

Category

Storage

Moved By

Jillian Mather Kettley

Date

February 8, 2024