Travertine
Rock made of calcite, aragonite
Common
A freshwater limestone laid down round mineral springs, banded or fibrous, white, tan, cream or rusty. Named after Tivoli (Tibur) near Rome; the soft, very porous kind from cold water is tufa.
Rock
- Kind of rock
- Chemical sedimentary rock
- Rock family
- Limestone and chalk
- Texture
- banded, porous
- Shapes the land into
- Hot Spring, Waterfall
- How it forms
- Calcium carbonate comes out of spring water quickly as it loses carbon dioxide, at hot springs, waterfalls and cascades, and in caves as stalactites.
- Uses
- A building stone in Italy and elsewhere.
Crystallography
- Habits
- Massive
Physical properties
- Luster
- Dull
- Colors
- white, pale yellow, reddish brown
- Transparency
- Opaque
Geology
- Origins
- Sedimentary, Hydrothermal
- Geography
- Italy (Tivoli), USA (Mammoth Hot Springs, Wyoming)
Classification
- Rarity
- Common
- Gem quality
- No
Sources
- Travertine. Wikipedia.
- Limestone. Wikipedia.
- C. R. Hallsworth, R. W. O’B. Knox, BGS Rock Classification Scheme, Volume 3: Classification of sediments and sedimentary rocks (Research Report RR 99-03). British Geological Survey, 1999.
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