A sample of tremolite

Tremolite is a member of the amphibole group of silicate minerals with composition: Ca₂Mg₅Si₈O₂₂(OH)₂. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on the moh's hardness scale of 5 to 6. Image File history File links Mineraly. ... Image File history File links Mineraly. ... For the logical fallacy, see Amphibology. ... The silicate minerals make up the the largest and most important class of rock-forming minerals. ... Metamorphism can be defined as the mineralogical, chemical and crystallographic changes in a solid-state rock, i. ... Dolomite crystals from Touissite, Morocco Dolomite is the name of both a carbonate rock and a mineral consisting of calcium magnesium carbonate (formula: CaMg(CO3)2) found in crystals. ... Quartz is amongst one of the most common minerals in the Earths continental crust. ... Well-cleaved, dark, fine-grained chlorite-actinolite metadiabase intrudes light granitic gneiss Actinolite is an inosilicate mineral with the chemical formula Ca2(MgFe)5Si8O22(OH)2 // Mineralogy Actinolite is an intermediate member in a series between tremolite (Mg-rich) and ferro-actinolite (Fe-rich). ... General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white Atomic mass 24. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ...

A fibrous variety of tremolite is used as asbestos. One of the two minerals of the gemstone jade is nephrite, a green variety of tremolite. Fibrous asbestos on muscovite Asbestos Asbestos Asbestos (a misapplication of Latin: asbestos quicklime from Greek ἄσβεστος: a-, not; sbestos, extinguishable) describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. ... A selection of gemstone pebbles made by tumbling rough rock with abrasive grit, in a rotating drum. ... A selection of antique, hand-crafted Chinese jadeite jade buttons Jade An ornamental stone, jade is a name applied to two different silicate minerals. ... There is also a community named Actinolite,_Ontario in Canada. ...

Tremolite is an indicator of metamorphic grade since at high temperatures it converts to diopside. Calcite, grossularite, talc, and serpentine are common associates of tremolite. Diopside is a monoclinic pyroxene mineral with composition MgCaSi2O6. ... Doubly refracting Calcite from Iceberg claim, Dixon, New Mexico. ... The garnet group of minerals show crystals with a habit of rhombic dodecahedrons and trapezohedrons. ... Talc block Talcum Powder Talc is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. ... Serpentine Serpentine is a group of common rock-forming hydrous magnesium iron phyllosilicate ((Mg, Fe)3Si2O5(OH)4) minerals; it is also often rich in other metal ores, including chromium, manganese, cobalt and nickel. ...

References

• Webmineral
• Mindat
• Mineral galleries