man-made/construction material
Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
Hardness: 3-5 (Mohs scale), variable. Color: Grayish-brown with weathered staining. Luster: Dull/Matte. Crystal structure: Amorphous/Microcrystalline. Specific gravity: 2.3-2.5.
- Hardness
- 3-5 (Mohs scale), variable
- Color
- Grayish-brown with weathered staining
- Luster
- Dull/Matte
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Physical properties
Hardness: 3-5 (Mohs scale), variable. Color: Grayish-brown with weathered staining. Luster: Dull/Matte. Crystal structure: Amorphous/Microcrystalline. Specific gravity: 2.3-2.5.
Formation & geological history
Created through industrial casting or hand-sculpting over a metal armature. This specimen is not geologically aged; it is a modern architectural element, likely found in a zoo or park setting as evidenced by the modern plaque and synthetic texture.
Uses & applications
Used in landscaping, commercial architecture, zoo exhibits, and theme parks to mimic natural environments without the weight of real boulders.
Geological facts
Many 'rocks' in modern theme parks and zoos are actually hollow shells of concrete. The mold for this specific texture was likely taken from a real limestone or granite outcrop to provide realistic detail.
Field identification & locations
Identify in the field by checking for hollow sounds when tapped, visible seam lines, or identifying synthetic plaques embedded in the face. Common in urban parks and recreation areas.
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