Skutterudite

Object/Artifact

-

Crater Rock Museum

Name/Title

Skutterudite

Entry/Object ID

2009.62.213

Description

Description: Common Name: Skutterudite Chemistry: CoAs3, Cobalt Arsenide Class: Sulfides PHYSICAL CHARACTERISTICS: Color is tin white to silver. Luster is metallic. Transparency crystals are opaque. Crystal System is isometric; bar 3 2/m Crystal Habits include the octahedron often modified with cube faces and the pyritohedron; often in a massive form. Cleavage is indistinct. Fracture is conchoidal or uneven. Hardness is 6. Specific Gravity is approximately 6.5 - 6.8 (heavier than average for metallic minerals) Streak is black. Best Field Indicators are crystal habit, color, streak, lack of good cleavage and associations. Occurrence: Notable Occurances include Cobalt, Ontario; Skutterud, Norway; Franklin, New Jersey and other cobalt mines around the world. Variety: Skutterudite is the cobalt-rich end member of a series (Smaltite, Chloanthite, or Ferro-Arsenite) in which Nickel or Iron replaces part of the Cobalt. Enough nickel is usually present to make Skutterudite a significant ore of Nickel. The iron rich variety is rare.

Collection

RAGM Mineral Collection

Acquisition

Accession

2009.62

Source or Donor

Museum Collection of Minerals

Acquisition Method

Donation

Location

Location

Shelf

CS-E-2

Room

Curation Storage

Building

Crater Rock Museum

Category

Storage

Moved By

Jillian Mather Kettley

Date

March 5, 2024