How To Identify Actinolite Like a Graduate Gemologist
2023年7月6日 · Actinolite is a green-to-black gemstone that’s generally translucent and sometimes displays the “cat’s eye” effect. It has a fibrous amphibole composition similar to Tremolite and often forms glassy, flattened crystal prisms. These crystals are relatively common worldwide but gem-quality stones are actually somewhat rare.
Actinolite - Wikipedia
Actinolite is an amphibole silicate mineral with the chemical formula Ca2(Mg4.5–2.5Fe2+0.5–2.5)Si8O22(OH)2. The name actinolite is derived from the Greek word aktis (ἀκτίς), meaning "beam" or "ray", because of the mineral's fibrous nature. [3]
Actinolite: Information, Properties, Occurrence – Geology In
Actinolite is a member of the amphibole group, a family of silicate minerals known for their long, needle-like or prismatic crystals. Actinolite is a relatively common mineral in some metamorphic rocks.
Actinolite Gemstone: Properties, Meaning, and Value Guide
2022年6月20日 · Actinolite is a generally translucent, green to black gemstone that sometimes displays a “cat’s eye” effect. This fibrous amphibole mineral is similar to tremolite and often forms glassy, flattened crystal prisms. Is actinolite rare or common?
ACTINOLITE MINERAL FACTS - Nevada Outback Gems
Actinolite comprises the glassy and fibrous varieties of amphibole. Generally occurs in long, slender, glassy, prisms of greenish color. Actinolite forms a full substitution series with the common calcium and magnesium mineral tremolite, Ca2Mg5Si8O22(OH)2. Magnesium and iron can be freely exchanged in the actinolite crystal structure.
Actinolite Tremolite, Crystal, Schist, Asbestos, Uses, MSDS
Actinolite crystals have a monoclinic structure. They have three axes with unequal lengths. They tend to form rectangular prisms with parallelogram bases. They have a splintered surface. Actinolites come in a wide variety of colors that range from creamy white to green and green-black or grey and grey-green.
Actinolite: Properties, Characteristics and Uses - Geossary
2023年1月6日 · Specimens range from green to dark green to black, well formed crystals occur as short to long prisms. The actinolite it generally occurs as layered crystals, parallel aggregates of layered crystals, or radial clusters. It is sometimes found as needle-like or fibrous crystals up to 10 inches (25 cm) long.
阳起石 - 维基百科，自由的百科全书
阳起石（英語： Actinolite ）為雙鏈矽酸鹽礦物角閃石族的礦物，當透闪石中的镁离子被二价铁离子置换超過2%以上就會成為阳起石，隨著铁含量越高颜色就越偏向深绿色及黑色。
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Actinolite
A sample of actinolite from Chester, Windsor Co., Vermont was used in observation and determination of physical properties, density, cleavage, optical properties, unit cell parameters, chemical composition, and dehydration characteristics. The sample consists of glassy dark green, fibrous bladed prisms with approximate 55°
This month’s featured mineral has many interesting and unusual varieties: While our specimens have well-developed prismatic crystals, which is unusual for actinolite, a fibrous variety is a former ore of asbestos, and a microcrystalline variety is one of …