UM1995-14-N:Si
Valid as an unnamed mineral
This page is currently not sponsored. Click here to sponsor this page.
The beta polymorph of nierite. Coexists with it in acid-resistant residues of few meteorites.
As sharply-defined epitaxial intergrowths with nierite; less abundant than it.
Six d-spacing values are given based on SAED.
As sharply-defined epitaxial intergrowths with nierite; less abundant than it.
Six d-spacing values are given based on SAED.
Unique Identifiers
Mindat ID:
53552
Long-form identifier:
mindat:1:1:53552:0
GUID
(UUID V4):
(UUID V4):
8ebb7c9a-4729-44be-9fc9-911d3c788c42
Classification of UM1995-14-N:Si
IMA status notes:
Unnamed (probably valid)
Optical Data of UM1995-14-N:Si
Type:
Uniaxial (+)
RI values:
nω = 2.020 nε = 2.040
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemical Properties of UM1995-14-N:Si
Formula:
β-Si3N4
Elements listed:
Crystallography of UM1995-14-N:Si
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 7.603 Å, c = 2.909 Å
Ratio:
a:c = 1 : 0.383
Unit Cell V:
145.63 ų (Calculated from Unit Cell)
Z:
2
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 UM1995-14-N:Si
mindat.org URL:
https://www.mindat.org/min-53552.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
References for UM1995-14-N:Si
Reference List:
Localities for UM1995-14-N:Si
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Azerbaijan | |
| |
Czech Republic | |
| |
USA | |
|