- For the community in Canada see Actinolite, Ontario. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page Actinolite is a community on the Skootamatta River in eastern Ontario. For the Sailor Moon character, see Shitennou (Sailor Moon). The are a group of villains from the Sailor Moon Metaseries. They are sub-leaders of the very first villain group the Dark Kingdom, working directly under
- Actinote redirects here. For the brush-footed butterfly genus, see Actinote (butterfly). The Nymphalidae is a family of about 5000 Species of butterflies which are distributed throughout most of the world A genus (plural genera from Γένος Latin genus "descent family type gender" is a low-level Taxonomic
| Actinolite | |
|---|---|
 Actinolite crystal in matrix from Finland
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| General | |
| Category | Mineral |
| Chemical formula | Ca2(Mg,Fe)5Si8O22(OH)2[1] |
| Identification | |
| Color | Pale to dark green, yellowish green and black. Finland, officially the Republic of Finland ( is a Nordic country situated in the Fennoscandian region of northern Europe. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes [2] White or grey when in asbestos form |
| Crystal habit | bladed, fibrous, radial |
| Crystal system | Monoclinic[2] |
| Twinning | simple or lammelar |
| Cleavage | Perfect in two directions. In Mineralogy, shape and size give rise to descriptive terms applied to the typical appearance or habit of Crystals The many terms used by mineralogists A crystal system is a category of Space groups which characterize Symmetry of structures in three dimensions with Translational symmetry in three directions In Crystallography, the monoclinic Crystal system is one of the 7 lattice Point groups A crystal system is described by three vectors. Crystal twinning occurs when two separate crystals share some of the same Crystal lattice points in a symmetrical manner Cleavage, in Mineralogy, is the tendency of crystalline materials to split along definite planes creating smooth surfaces of which there are several named types [2] |
| Fracture | uneven[2] |
| Mohs Scale hardness | 5 - 6[2] |
| Luster | vitreous to dull[2] |
| Polish luster | vitreous [2] |
| Refractive index | 1. In the field of Mineralogy, fracture is a term used to describe the shape and texture of the surface formed when a Mineral is broken The Mohs scale of mineral hardness characterizes the scratch resistance of various Minerals through the ability of a harder material to scratch a softer material Lustre (or luster) is a description of the way light interacts with the surface of a Crystal, rock, or Mineral. The refractive index (or index of Refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves is reduced inside the medium 606 - 1. 641 (+. 014)[2] |
| Optical Properties | Double refractive with anomalous aggregate reaction, biaxial negative. [2] |
| Birefringence | . Birefringence, or double refraction, is the decomposition of a ray of Light into two rays (the ordinary ray and the extraordinary ray 022 - . 027[2] |
| Pleochroism | moderate, yellow to dark green (in stones that are transparent)[2] |
| Ultraviolet fluorescence | inert[2] |
| Absorption spectra | faint line at 503nm[2] |
| Streak | white |
| Specific gravity | 3. Pleochroism is an Optical phenomenon in which grains of a rock appear to be different colors when observed at different angles under a Petrographic microscope. Fluorescence is a Luminescence that is mostly found as an Absorption spectroscopy refers to a range of techniques employing the interaction of electromagnetic radiation with matter The streak (also called powder color) of a Mineral is the Color of the powder produced when it is dragged across an unweathered surface Specific gravity is defined as the ratio of the Density of a given solid or liquid substance to the density of water at a specific temperature and pressure typically 00 (+. 10, -. 05)[2] |
| Diaphaneity | translucent to transparent |
Actinolite is an inosilicate mineral with the chemical formula
Ca2(Mg,Fe)5Si8O22(OH)2
Contents |
Mineralogy
Actinolite is an intermediate member in a solid-solution series between tremolite (Mg-rich) and ferro-actinolite (Fe-rich) amphiboles. The silicate minerals make up the largest and most important class of rock-forming Minerals They are classified based on the structure of their silicate Ion group A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Calcium (ˈkælsiəm is the Chemical element with the symbol Ca and Atomic number 20 Magnesium (mægˈniːziəm is a Chemical element with the symbol Mg, Atomic number 12 Atomic weight 24 Iron (ˈаɪɚn is a Chemical element with the symbol Fe (ferrum and Atomic number 26 Silicon (ˈsɪlɪkən or /ˈsɪlɪkɒn/ silicium is the Chemical element that has the symbol Si and Atomic number 14 Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 A solid solution is a Solid - state Solution of one or more solutes in a Solvent. Tremolite is a member of the Amphibole group of Silicate minerals with composition Ca 2 Mg 5 Si 8 Amphibole (pronounced amfi-bowl defines an important group of generally dark-colored rock-forming inosilicate Minerals composed of double chain SiO4 As seen from the chemical formula above, Mg and Fe ions can be freely exchanged in the crystal structure. A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge In Materials science, a crystal is a Solid in which the constituent Atoms Molecules or Ions are packed in a regularly ordered repeating Like tremolite, asbestiform actinolite is regulated as asbestos. Tremolite is a member of the Amphibole group of Silicate minerals with composition Ca 2 Mg 5 Si 8 Asbestiform implies a particular kind of fibrosity in which Fibers have high Tensile strength and flexibility Asbestos is a group of Minerals with long thin fibrous Crystals The word "asbestos" (῾ἀσβεστος is derived from a Greek adjective
Occurrence
Actinolite is commonly found in metamorphic rocks, such as contact aureoles surrounding cooled intrusive igneous rocks. Metamorphic rock is the result of the transformation of an existing rock type the protolith, in a process called Metamorphism, which means "change In Geology, an intrusion is a body of Igneous rock that has Crystallized from molten Magma below the surface of the Earth. Igneous rocks (etymology from Latin ignis, fire are rocks formed by solidification of cooled Magma (molten rock It also occurs as a product of metamorphism of magnesium-rich limestones. Metamorphism can be defined as the solid state recrystallisation of pre-existing rocks due to changes in heat and/or pressure and/or introduction of fluids i Limestone is a Sedimentary rock composed largely of the Mineral Calcite ( Calcium carbonate: CaCO3
The old mineral name uralite is at times applied to an alteration product of primary pyroxene by a mixture composed largely of actinolite. The pyroxenes are a group of important rock-forming Silicate minerals found in many Igneous and metamorphic rocks. The metamorphosed gabbro or diabase rock bodies, referred to as epidiorite, contain a considerable amount of this uralitic alteration. Gabbro (ˈɡæbrəʊ is a dark coarse-grained intrusive Igneous rock chemically equivalent to Basalt. Diabase (ˈdaɪəbeɪs or Dolerite is a Mafic, Holocrystalline, Igneous rock equivalent to Volcanic Basalt or plutonic In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere Amphibolite (æmˈfɪbəlaɪt is the name given to a rock consisting mainly of hornblende Amphibole, the use of the term being restricted however to Metamorphic
Some forms of asbestos are formed from fibrous actinolite, the fibres being so small that they can enter the lungs and damage the alveoli. Fiber or fibre is a class of Materials that are continuous filaments or are in discrete elongated pieces similar to lengths of thread. lung is the essential Respiration organ in air-breathing Animals including most Tetrapods a few Fish and a few Snails The most primitive An alveolus (plural alveoli, from Latin alveolus, "little cavity" is an anatomical structure that has the form of a hollow cavity
Gemology
Some forms of actinolite are used as gemstones. A gemstone or gem, also called a precious or semi-precious stone, is a piece of attractive Mineral, which &mdash when cut and polished &mdash The first is called nephrite, which is one of the two types of jade (the other being jadeite a variety of pyroxene). Nephrite is a variety of the calcium and magnesium rich Amphibole mineral Actinolite (aggregates of which also make up one form of Asbestos) Jade is an Ornamental stone. The term jade is applied to two different rocks that are made up of different Silicate minerals. Jadeite is a Pyroxene mineral with composition Na[[aluminum Al]] Si 2 O 6 [2]
Another gem variety of actinolite is the chatoyant form known as cat's-eye actinolite. In Gemology, chatoyancy (or chatoyance) is an optical reflectance effect seen in certain Gemstones Coined from the French "oeil de chat" This stone is translucent to opaque, and green to yellowish green color. This variety has had the misnomer jade cat's-eye. A misnomer is a term which suggests an interpretation that is known to be untrue [2] Transparent actinolite is rare and is faceted for gem collectors. [2] Major sources for these forms of actinolite are Taiwan and Canada. Taiwan ( Taiwanese: Tâi-oân/Tāi-oân (historically 大灣/台員/大員/台圓/大圓/台窩灣 is an Island in East Asia. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page [2] Other sources are Madagascar, Tanzania, and the US. Madagascar, or Republic of Madagascar (older name Malagasy Republic) is an Island nation in the Indian Ocean off the southeastern Tanzania ˌtænzəˈniːə officially the United Republic of Tanzania (Jamhuri ya Muungano wa Tanzania is a country in East Africa bordered by Kenya The United States of America —commonly referred to as the [2]
Related minerals
References
- ^ http://rruff.geo.arizona.edu/doclib/hom/actinolite.pdf Mineral Handbook
- ^ a b c d e f g h i j k l m n o p q r s (Gia), Gemological. Tremolite is a member of the Amphibole group of Silicate minerals with composition Ca 2 Mg 5 Si 8 Jade is an Ornamental stone. The term jade is applied to two different rocks that are made up of different Silicate minerals. Gem Reference Guide. City: Gemological Institute of America (GIA), 1988. The Gemological Institute of America, or GIA, is a non-profit institute dedicated to research and education in the field of Gemology. ISBN 0-87311-019-6
- Hurlbut, Cornelius S. ; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed. , John Wiley and Sons, New York ISBN 0-471-80580-7
- Mindat.org
- Webmineral.org
- Mindat - uralite
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