Unnamed (Hydrous Magnesium Aluminosilicate; 23Å Phase)
A material that is NOT an approved mineral species
This page is currently not sponsored. Click here to sponsor this page.
Formula:
Mg11Al2Si4O16(OH)12
Specific Gravity:
2.761 (Calculated)
Crystal System:
Hexagonal
A hypothetical, synthesized phase that is expected to be present in Al-bearing subducting slabs, thus transferring water and Al into either upper deep mantle or upper part of the transition zone.
Structurally unique among chemically similar compounds in having a very long c axis.
Stability in the same range as of the Phase A. Also stable "in the chlorite composition", at 10 GPa and 1000 °C.
Structurally unique among chemically similar compounds in having a very long c axis.
Stability in the same range as of the Phase A. Also stable "in the chlorite composition", at 10 GPa and 1000 °C.
Unique Identifiers
Mindat ID:
55681
Long-form identifier:
mindat:1:1:55681:5
GUID
(UUID V4):
(UUID V4):
436d3600-4b13-4e1d-86d6-dabfe82aeeac
Physical Properties of Unnamed (Hydrous Magnesium Aluminosilicate; 23Å Phase)
Density:
2.761 g/cm3 (Calculated)
Chemistry of Unnamed (Hydrous Magnesium Aluminosilicate; 23Å Phase)
Mindat Formula:
Mg11Al2Si4O16(OH)12
Crystallography of Unnamed (Hydrous Magnesium Aluminosilicate; 23Å Phase)
Crystal System:
Hexagonal
Cell Parameters:
a = 5.1972(2) Å, c = 22.991(4) Å
Ratio:
a:c = 1 : 4.424
Unit Cell V:
537.8 ų
Z:
1
Comment:
Space group is P6c2, P63cm, or P63/mcm
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Unnamed (Hydrous Magnesium Aluminosilicate; 23Å Phase)
mindat.org URL:
https://www.mindat.org/min-55681.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers: