A Book Exhibit at the University of Illinois at Urbana-Champaign
Commemorating the 100th Anniversary of the Discovery of X-ray Diffraction

Crystal Gallery

image of calcite crystal

CaCO₃ (big crystals) with Dolomite CaMg(CO₃)₂ and Chalcopyrite CuFeS₂ (yellow),
Sweetwater Mine,
Reynolds County, Missouri USA

image of calcareous spar (calcite)

Calcareous Spar (Calcite) showing birefringence.

image of Pyrite or iron pyrite

Pyrite or iron pyrite FeS₂.

image of Celestine

Celestine SrSO₄, Madagascar

image of Grossular (garnet)

Grossular (garnet) - Ca₃Al₂Si₃O₁₂, near Lake Jaco, Chihuahua, Mexico

image of copper sulfate

Copper Sulfate - CuSO₄ - One of the first crystals to be examined by x-ray diffraction.

image of quartz

Quartz - A crystal that comes in left and right-handed forms.

image of magnetite

Magnetite - Fe₂O₄
Serro, Minas Gerais,
Brazil.

image of beryl

Beryl - Be₃Al₂Si₆O₁₈
Hexagonal Crystal
Colorado USA

image of a single crystal of pyrite

Pyrite - FeS₂

image of stibnite

Stibnite - Sb₂S₃
Used as an eyeliner by Cleopatra. Called kohl when used as an eyeliner.

image of sylvite - KCl

Sylvite - KCl
Carlsbad, New Mexico USA

image of hematite

Hematite - Fe₂O₃
Mina Casa de Pedra,
Minas Gerais, Brazil

image of quartz on sphalerite

Quartz - SiO₂ on
Sphalerite - (Zn, Fe)S
Kapnik, Maramures, Romania