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State Symbols
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Official state symbols represent the cultural heritage
and natural treasures of each state or the entire United States |
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Georgia Symbols
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Georgia State Mineral
Staurolite
Adopted in 1976
Georgia has a wealth of minerals, among them staurolite crystals, popularly called "Fairy Crosses" or "Fairy Stones." Particularly abundant in north Georgia, the distinctively twinned, crossed crystals have been collected for generations as good luck charms.
Georgia Code, Title 50, Chapter 3
50-3-59.
Staurolite is designated as the official Georgia state mineral.
Staurolite is a common metamorphic mineral that is useful to geologists to determine the degree of metamorphism. Staurolite is famous for its twinned crystals that form into the shape of a cross. Its name comes from the Greek for cross. The twin is a classic penetration twin where it appears as if two crystals grew into and out of each other. It actually forms two twin types; one that is nearly 90 degrees and one that is nearly 60 degrees. The 60 degree type is more common but the 90 degree type is the most sought after. It was associated with Christianity as a symbol for the cross and as a good luck charm. It has been given the names "Fairy Stone" or Fairy Cross". Some scarcer specimens show both twin forms and can look like a blunt six rayed star.
Physical Characteristics:
- Color is reddish-brown, brown, and black.
- Luster is vitreous to resinous to dull.
- Transparency crystals are translucent to opaque.
- Crystal System monoclinic; 2/m
- Crystal Habits: the typical crystal are prismatic or tabular. Some crystals can have a pseudo-hexagonal cross-section but most are flattened into a more diamond shaped cross-section with two of the four points truncated. Twinning is seen in about 35% of the specimens encountered in nature. Twins are cross (+) or X-shaped and can be both at the same time. Crystals sometimes grown onto kyanite crystals.
- Cleavage poor, in one direction.
- Fracture is uneven to conchoidal
- Hardness is 7-7.5
- Specific Gravity is 3.7-3.8
- Streak white
- Associated Minerals include almandine, micas, kyanite and other metamorphic minerals.
- Other Characteristics:
- Notable Occurrences Ducktown Tennessee, Georgia, Virginia and Montana, USA; Brazil; Scotland, Italy and France.
- Best Field Indicators are color, associations, twinning and crystal habit
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Online High Schools
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State Symbols
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State symbols represent things that are special to a
particular state.
symbol \ˈsim-bəl\
noun
Etymology:
in sense 1, from Late Latin symbolum, from Late Greek symbolon, from Greek, token, sign; in
other senses from Latin symbolum token, sign, symbol, from Greek symbolon, literally, token
of identity verified by comparing its other half, from symballein to throw together,
compare, from syn- + ballein to throw — more at devil
Date: 15th century
1: Something that represents something else by association, resemblance, or
convention, especially a material object used to represent something invisible.
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