Keywords

Amphibole



Keyword Definition

Amphibole

The amphibole minerals are inosilicates of the general formula XY2Z5(Si,Al,Ti)8O22(OH,F)2. The X represents large ions such as Na or K and this site can be left vacant. The Y can be populated by Na, Ca, Fe2+, Li, Mn2+, Al, Mg and more rarely Zn, Ni, or Co. The Z can be filled by ions such as Fe3+, Mn3+, Cr3+, Al, Ti4+, Fe2+, Li and Mn2+.  Most amphiboles are monoclinic, but members of the anthophyllite subgroup are orthorhombic.

Hornblende, Ca2(Mg,Fe,Al)5(Al,Si)8O22(OH)2, is an important constituent of many igneous and metamorphic rocks.



Category: Analysed quantities

Subcategory: Grain Count

Keywords corresponding to analysed quantities.  The types of analysed quantities have been grouped into eleven different subcategories. Examples: “Au”, “pH”. Taken from the “Analytical_Quantities_SHARED” database table. The subcategories are taken from the “Analytical_Quantity_Types_SHARED” database table.


Associated Analytical Suites:

IndexSuite IDSuite Name
1  237     I and M Morrison grain picking and visual mineral identification (microprobe counts)
2  605     SRC / Consorminex indicator mineral grain counts

Associated Analytical Packages:

IndexPackage IDPackage Name
1  166     I and M Morrison mineral identification 0.25-0.5 mm fraction; conditional 0.5-1.0 mm fraction identification
2  167     I and M Morrison mineral identification 0.25-0.5 mm fraction; conditional 0.5-1 mm and 1-2 mm fraction identification
3  169     I and M Morrison mineral identification 0.25-0.5 mm fraction, occasional 0.5-1 mm fraction identification
4  173     I and M Morrison mineral identification. 0.25-0.5 mm fraction
5  176     I and M Morrison mineral identification. 0.25-0.5 mm, 0.5-1 mm fraction
6  287     SRC / Consorminex: IM picking
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