Unnamed Organometallic Se Phase
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About Unnamed Organometallic Se Phase
Formula:
C, H, Se (?)
Colour:
Lemon-yellow
Lustre:
Adamantine
Crystal System:
Orthorhombic
Formed in vents (in the smoldering Anna coaldump) with a temperature of around 80°C, near kremersite-bearing vents, as bright lemon-yellow, transparent crystals with an adamantine luster. The phase forms prismatic to acicular crystals that are often twinned.
The X-ray powder diffraction data does not fit any phase in the ICDD-PDF database. EDS analyses showed only Se but no other elements with atomic number greater than 7. A single-crystal structure analysis yielded the preliminary data: orthorhombic cell, probably Pmn21, a = 3.811, b = 7.874, c = 14.421 Å. Only part of the crystal structure could be solved due to problems of twinning and relatively low crystal quality; the phase seems to contain Se atoms attached to organic ring molecules. The phase occurs together with sulfate minerals.
The X-ray powder diffraction data does not fit any phase in the ICDD-PDF database. EDS analyses showed only Se but no other elements with atomic number greater than 7. A single-crystal structure analysis yielded the preliminary data: orthorhombic cell, probably Pmn21, a = 3.811, b = 7.874, c = 14.421 Å. Only part of the crystal structure could be solved due to problems of twinning and relatively low crystal quality; the phase seems to contain Se atoms attached to organic ring molecules. The phase occurs together with sulfate minerals.
Unique Identifiers
Mindat ID:
47537
Long-form identifier:
mindat:1:1:47537:0
Physical Properties of Unnamed Organometallic Se Phase
Chemistry of Unnamed Organometallic Se Phase
Mindat Formula:
C, H, Se (?)
Elements listed:
Crystallography of Unnamed Organometallic Se Phase
Crystal System:
Orthorhombic
Cell Parameters:
a = 3.811 Å, b = 7.874 Å, c = 14.421 Å
Ratio:
a:b:c = 0.484 : 1 : 1.831
Unit Cell V:
432.74 ų (Calculated from Unit Cell)
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 Organometallic Se Phase
mindat.org URL:
https://www.mindat.org/min-47537.html
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References for Unnamed Organometallic Se Phase
Localities for Unnamed Organometallic Se Phase
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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.
Germany | |
| Witzke et al. (2015) |
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany