amphibole info - EAS
- Amphibole is an crucial institution of usually darkish-colored, inosilicate minerals, forming prism or needlelike crystals,composed of double chain SiO4 tetrahedra, connected at the vertices and normally containing ions of iron and/or magnesium in their systems. Amphiboles may be inexperienced, black, colorless, white, yellow, blue, or brown.2V: Measured: 10° to 80°, Calculated: 62° to 84°Birefringence: δ = 0.021Optic Sign: Biaxial (-)
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See all on Wikipediahttps://en.wikipedia.org/wiki/AmphiboleAmphibole is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO 4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Its IMA symbol is Amp. Amphiboles can be green, black, colorless, … See more
Amphiboles crystallize into two crystal systems, monoclinic and orthorhombic. In chemical composition and general characteristics they are similar to the pyroxenes. The chief differences from pyroxenes are that … See more
The name amphibole derives from Greek amphíbolos (ἀμφίβολος, lit. 'double entendre'), implying ambiguity. The name was used by René Just Haüy to include tremolite, See more
The more common amphiboles are classified as shown in the following table:
Other species
Orthorhombic series
• Holmquistite, Li2Mg3Al2Si8O22(OH)2
Monoclinic series
• See moreWikipedia text under CC-BY-SA licenseamphibole | mineral | Britannica
https://www.britannica.com/science/amphiboleamphibole, any of a group of common rock-forming silicate minerals. Amphiboles are found principally in metamorphic and igneous rocks. They occur in many metamorphic rocks, especially those derived from mafic igneous rocks …
Amphibole | Common Minerals
https://commonminerals.esci.umn.edu/minerals-g/amphiboleIt is sometimes possible to distinguish amphibole crystals by their six-sided crystal cross sections, but more often the rock’s other mineral composition offers a better clue for field …
- https://www.britannica.com/science/amphibole/Physical-properties
Physical properties. Long prismatic, acicular, or fibrous crystal habit, Mohs hardness between 5 and 6, and two directions of cleavage intersecting at approximately 56° and 124° generally suffice to identify amphiboles in hand …
- https://geologyscience.com/minerals/amphiboleSee more on geologyscience.comExhibiting an extensive range of possible cation substitutions, amphiboles crystallize in both igneous and metamorphic rocks with a broad range of bulk chemical compositions. Because of their relative instability to chemical weathering at the Earth’s surface, amphiboles make up only a minor constituent in most sedi…
- 2V: Measured: 10° to 80°, Calculated: 62° to 84°
- Optic Sign: Biaxial (-)
- Birefringence: δ = 0.021
- Estimated Reading Time: 5 mins
- https://mineralseducationcoalition.org/.../amphibole
Amphibolite is a dark, heavy, metamorphic rock composed mostly of the mineral amphibole. Amphibolites have very little to no quartz. “Amphibole” refers not to a single mineral, but to a group of minerals. Most belong to the …
- https://crystal-information.com/encyclopedia/...
Amphibole Quartz Properties and Meaning – Amphibole Quartz Crystals have inclusions, mostly consisting of (yellow) Limonite, (red) Hematite, (white) Kaolinite, and (pink) Lithium. This Quartz is from Bahia, Brazil. Read more …
- https://www.mindat.org/min-207.html
The name amphibole (Greek αμφιβολος - amphibolos meaning 'ambiguous') was used by René Just Haüy to include tremolite, actinolite, tourmaline, and hornblende. The group was so …
Amphibole Quartz Healing Crystal Properties - Sage Crystals
https://sagecrystals.com/blogs/properties/amphiboleAmphibole Quartz is also known as Angel Phantom Quartz because the inner phantom appears to resemble the wispy wings of an angel. Amphibole inclusions mostly consist of (yellow) …
Amphibole - RRUFF Database: Raman, X-ray, Infrared, and …
https://rruff.info/amphiboleName: Amphibole RRUFF ID: R110203 Ideal Chemistry: Locality: Bear Lake diggings, Tory Hill, Monmounth Township, Haliburton Co., Ontario, Canada Source: Donald Doell Owner: RRUFF …
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