Diaspore is a mineral that belongs to the oxide class. Its chemical formula is AlO(OH), which means that it has both aluminum and hydroxide ions in it. The word Diaspore is spelled with five letters and is pronounced /daɪˈæspɔːr/ in IPA. The first syllable is stressed with the long "i" sound, followed by the short "a" sound, and then a long "o" sound. The final syllable is pronounced with the "r" sound. This word is often used to describe the white or colorless mineral that is commonly found in bauxite ore.
Diaspore is a noun that refers to a naturally occurring mineral, specifically an aluminum oxide hydroxide known by the chemical formula AlO(OH). It is commonly found in various geological formations, particularly in the weathered parts of bauxite ore deposits. Diaspore possesses distinctive physical and chemical properties, making it easily recognizable. Its crystal structure belongs to the orthorhombic system.
In terms of appearance, diaspore typically occurs as white, colorless, or pale yellow prismatic crystals. It can also be found as lamellar masses or granular aggregates. The mineral exhibits a vitreous to pearly luster, and its hardness ranges from 6.5 to 7 on the Mohs scale, making it relatively hard. Moreover, diaspore's specific gravity falls between 3.3 and 3.5.
Diaspore is primarily valued for its distinctive color-changing phenomenon, known as pleochroism. When viewed at different angles under polarized light, it can exhibit a range of colors, including yellow, green, brown, and even pink. This optical property contributes to its popularity as a gemstone, where it is commonly known as "zultanite" or "cymophane." These gems are prized for their unique and exquisite color variations.
Additionally, diaspore possesses a relatively high refractive index, resulting in excellent brilliance and dispersion of light. These optical properties make diaspore an attractive choice for jewelry and ornamental purposes. Its rarity and exquisite natural color-changing abilities contribute to its desirability amongst gem collectors and enthusiasts.
The word "diaspore" has its origins in the Greek language. It comes from the Greek word "diaspora" (διασπορά), which means "scattering" or "dispersion". This term was initially used in a religious context to refer to the scattering of Jews outside of the Land of Israel after the Babylonian exile. Over time, the term "diaspora" evolved to encompass any group of people scattered or dispersed away from their original homeland or community. In the field of biology, "diaspore" refers to any propagative plant structure that helps in the dispersal of seeds, spores, or other reproductive parts.