Agatized Coral

Oligocene. SiO2 - Mohs Hardness: 6 1/2 - 7. Agatized coral occurs when silica in the ocean water hardens, replacing the limy corals with a form of quartz known as chalcedony. This long process (20-30 million years) results in the formation of a "pseudomorph," meaning that one mineral has replaced another without having lost its original form. In 1979 agatized coral was designated Florida's official state stone.
Abstract/Description: Oligocene. SiO2 - Mohs Hardness: 6 1/2 - 7. Agatized coral occurs when silica in the ocean water hardens, replacing the limy corals with a form of quartz known as chalcedony. This long process (20-30 million years) results in the formation of a "pseudomorph," meaning that one mineral has replaced another without having lost its original form. In 1979 agatized coral was designated Florida's official state stone.
Subject(s): Spruce Pine, NC, United States
environmental sciences
Title: Agatized Coral.
Type of Resource: still image
Genre: natural object
Physical Form: image/jpeg
Abstract/Description: Oligocene. SiO2 - Mohs Hardness: 6 1/2 - 7. Agatized coral occurs when silica in the ocean water hardens, replacing the limy corals with a form of quartz known as chalcedony. This long process (20-30 million years) results in the formation of a "pseudomorph," meaning that one mineral has replaced another without having lost its original form. In 1979 agatized coral was designated Florida's official state stone.
Identifier(s): rockminx-8-3-3 (IID)
Subject(s): Spruce Pine, NC, United States
environmental sciences
Held by: The University of Toledo
Location: Digital Initiatives, University of Toledo Libraries
Rights Statement: NO COPYRIGHT - UNITED STATES
Related Title: Ruth Jacobs Collection.
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