UM2000-61-SiO
Valid as an unnamed mineral
This page is currently not sponsored. Click here to sponsor this page.
Formula:
SiO2
Specific Gravity:
4.30 (Calculated)
Crystal System:
Monoclinic
Polymorph of:
Originally given as "UM2000-61-SiO:". A monoclinic, baddeleyite-like polymorph, or rather polytype, of silica. The unit cell parameters differ from other natural monoclinic SiO2 species, coesite and mogánite. Also differs from synthetic 'Unnamed (Monoclinic Phase-II Cristobalite)'.
Found within wedge-shaped SiO2 grains, 150–900 µm, comprising mosaics of domains, 10–60 µm in diameter. The domains show orthogonal sets of lamellae. Intermixed with stishovite and seifertite.
Found within wedge-shaped SiO2 grains, 150–900 µm, comprising mosaics of domains, 10–60 µm in diameter. The domains show orthogonal sets of lamellae. Intermixed with stishovite and seifertite.
Unique Identifiers
Mindat ID:
54216
Long-form identifier:
mindat:1:1:54216:8
GUID
(UUID V4):
(UUID V4):
1b80fb6f-549e-46bb-b263-7aea0e89bdd3
IMA Classification of UM2000-61-SiO
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM2000-61-SiO
Density:
4.30(2) g/cm3 (Calculated)
Chemistry of UM2000-61-SiO
Mindat Formula:
SiO2
Elements listed:
Crystallography of UM2000-61-SiO
Crystal System:
Monoclinic
Cell Parameters:
a = 4.375(1) Å, b = 4.584(1) Å, c = 4.708(1) Å
β = 99.97(3)°
β = 99.97(3)°
Ratio:
a:b:c = 0.954 : 1 : 1.027
Unit Cell V:
92.99 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.260 Å | (22) |
| 2.767 Å | (100) |
| 2.459 Å | (31) |
| 1.950 Å | (26) |
| 1.629 Å | (24) |
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 UM2000-61-SiO
mindat.org URL:
https://www.mindat.org/min-54216.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for UM2000-61-SiO
Reference List:
Localities for UM2000-61-SiO
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
India | |
| El Goresy et al. (2000) +1 other reference |
