Actinocrinite is a term from geology that describes a type of fossilized animal. Its pronunciation is /ˌæktənoʊˈkraɪnaɪt/, which can be broken down into individual phonetic sounds. The first syllable, "/æktə/", is pronounced with a short "a" sound and a "t" sound that is less pronounced than the "k" sound in the following syllable. The second syllable, "/noʊ/", uses a long "o" sound followed by a short "o". The final syllable, "/kraɪnaɪt/", features a "k" sound followed by a diphthong with a long "i" sound and a terminal "t" sound.
Actinocrinite is a noun that refers to a rare, yellowish-green or pale blue, crystalline mineral composed primarily of calcium, aluminum, and silicon. It belongs to the group of minerals known as silicates and specifically to the scapolite series.
This mineral occurs in metamorphic rocks, especially those of high-pressure environments, but it is also found in some granitic and alkalic igneous rocks. Actinocrinite usually forms in elongated crystals, which are often prismatic or tabular in shape. It has a vitreous or pearly luster and exhibits a translucent to transparent appearance.
Actinocrinite derives its name from the Greek words "aktinos," meaning "ray," and "krinon," meaning "lily." This name is given to the mineral due to its unique crystal habit, resembling the rays of a lily flower. Actinocrinite is often associated with other minerals such as garnet, diopside, calcite, and various types of feldspar.
Due to its beautiful color and rarity, actinocrinite has some limited use in the production of jewelry and as a decorative gemstone. However, its scarcity and low commercial demand make it primarily valuable to mineral collectors and enthusiasts. Actinocrinite is notable for its interesting crystal formations and its unique mineral composition, which contribute to its geological significance and aesthetic appeal.
A genus of encrinites characterised by the thorn-like side arms which project from the main column.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "actinocrinite" is derived from two root words: "actino", derived from the Greek word "aktis" meaning "ray" or "beam", and "crinite", derived from the Latin word "crinis" meaning "hair" or "tresses".
The combination of these roots forms "actinocrinite", a term used in geology to refer to a type of radiating, hair-like formation found in certain minerals. The name is chosen to describe the specific appearance of these formations, which resemble rays or hairs extending from a central point.