ChalCedonyChalCedony

DanielDaniel

My Mineral GlossaryMy Mineral Glossary CrystalCrystal = a clear, transparent mineral resembling ice.= a clear, transparent mineral resembling ice. Igneous rock Igneous rock == produced under conditions involving intense heat, as rocks produced under conditions involving intense heat, as rocks

of volcanic origin or rocks crystallized from molten magma.of volcanic origin or rocks crystallized from molten magma. Metamorphic rockMetamorphic rock= rock that was once one form of rock but has changed = rock that was once one form of rock but has changed

to another under the influence of heat, pressure, or some other agent to another under the influence of heat, pressure, or some other agent without passing through a liquid phase.without passing through a liquid phase.

MineralMineral= any of a class of substances occurring in nature, usually = any of a class of substances occurring in nature, usually comprising inorganic substances, as quartz or feldspar, of definite chemical comprising inorganic substances, as quartz or feldspar, of definite chemical composition.composition.

Sedimentary rockSedimentary rock= rock that was formed through the deposition and = rock that was formed through the deposition and solidifacation of sediment especially sediment transported by water [rivers, solidifacation of sediment especially sediment transported by water [rivers, lakes and oceans], ice [glaciers], and wind. Sedimentary rocks are of ten lakes and oceans], ice [glaciers], and wind. Sedimentary rocks are of ten deposited in layers, and frequently contains fossils.deposited in layers, and frequently contains fossils.

What is chalcedony?What is chalcedony?

The many different kinds of chalcedony are agate, carnelian, onyx, The many different kinds of chalcedony are agate, carnelian, onyx, jasper, tigers eye, chrysoprise, bloodstone, sard, sardonyx and flint.jasper, tigers eye, chrysoprise, bloodstone, sard, sardonyx and flint.

What does chalcedony look like?What does chalcedony look like?

It is usually brown to grey in color and some varieties are often It is usually brown to grey in color and some varieties are often noted for their bands of color.noted for their bands of color.

Where is chalcedony found?Where is chalcedony found?

Chalcedony can be found in china, India, Madagascar, Mexico and Chalcedony can be found in china, India, Madagascar, Mexico and on the shores of lake superior.on the shores of lake superior.

What areWhat are chalcedony uses?chalcedony uses?

It is used for jewelry.It is used for jewelry. It is also used for decoration.It is also used for decoration.

Interesting factsInteresting facts

Chalcedony dissolves in hydrofluoric acid.Chalcedony dissolves in hydrofluoric acid.