Name/Title
ChalcopyriteEntry/Object ID
78.63.480Description
Chemical Composition: Al(OH)3
Crystal System: Hexagonal System
Description: Common Name:Copper
Chemistry: Cu
Group: Element
Location: Ontario,Canada
Description: Copper and Nickel on rock. Color is mettalic gold to a bluish green.
Physical Charateristics:
Color is copper colored with weathered specimens tarnished green.
• Luster is metallic.
• Transparency is opaque.
• Crystal System is isometric; 4/m bar 3 2/m
• Crystal Habits include massive, wires and arborescent or branching forms as the most common, whole individual crystals are extremely rare but when present are usually cubes and octahedrons. Occasionally, massive forms will show some recognizable crystal faces on outer surfaces.
• Cleavage is absent.
• Fracture is jagged.
• Streak is reddish copper color.
• Hardness is 2.5-3
• Specific Gravity is 8.9+ (above average for metallic)
• Associated Minerals are silver, calcite, malachite and other secondary copper minerals.
Other Characteristics: ductile, malleable and sectile, meaning it can be pounded into other shapes, stretched into a wire and cut into slices.
• Notable Occurrences include Michigan and Arizona, USA; Germany; Russia and Australia.
• Best Field Indicators are color, ductility and crystal habit.
Hardness: 7 Quartz
Rock Type: SedimentaryCollection
Delmar Smith Mineral CollectionAcquisition
Accession
78.63Source or Donor
Delmar Smith Crystal CollectionAcquisition Method
DonationDimensions
Width
2 inDepth
3/4 inLength
2-3/4 inLocation
Location
Shelf
CS-D-1Room
Curation StorageBuilding
Crater Rock MuseumCategory
StorageMoved By
Curtis GardnerDate
December 19, 2023Location
Wall
NorthBuilding
Storage (old gift shop upstairs)Category
PermanentMoved By
Rawley WyattDate
September 2, 2014Location
Cabinet
G-1 rearWall
NorthBuilding
Storage (old gift shop upstairs)Category
Permanent