Name/Title
StromatoliteEntry/Object ID
2011.57.122Description
Chemical Composition: CaCO3
Crystal System: Hexagonal System
Description: Common Name: Stromatolite
Chemistry: CaCO3
Class: Carbonates
Location: Africa
Description: Thin slice with smooth face. Oolitic and orbicular structures visible throughout. Light and dark brown and black.
Physical Characteristics:
Stromatolites (pronounced /str?'mæto?la?ts/; from Greek st??µa, stroma, mattress, bed, stratum, and ?????, lithos, rock) are layered accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains by biofilms of microorganisms, especially cyanobacteria (commonly known as blue-green algae).[1] They include some of the most ancient records of life on Earth.
Fracture: Conchoidal
Grain Size: Medium
Hardness: 3 Calcite
Kingdom: Monera (Prokaryotes)
Luster: Vitreous
Class: Prokaryotes
Phylum: Cyanobacteria
Rock Origin: Terrestrial
Rock Type: Sedimentary
Specific Gravity: 2.7
Streak: whiteCollection
Museum Collection of FossilsAcquisition
Accession
2011.57Source or Donor
Museum Collection of FossilsAcquisition Method
Long-term LoanDimensions
Width
2-3/4 inDepth
1/8 inLength
3-1/8 inLocation
Location
Container
CenterDrawer
Top ShelfShelf
LeftCabinet
Case # 51Wall
NorthRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
Permanent
