UM1997-22-Cl:KNa
Valid as an unnamed mineral
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Formula:
K-Na-Cl (?)
Crystal System:
Monoclinic
Assumed to be a chloride due to its partial solution in water, complete solution during heating, and association with halite. Forms rims on studenitsite. Also found filling threads and cracks of ulexite. Platy/prismatic.
Environment: core of borate rocks.
Electron microprobe data (wt.%)
K 14.9–19.2
Na 4.3–7.0 (Na inversely varies with K)
Environment: core of borate rocks.
Electron microprobe data (wt.%)
K 14.9–19.2
Na 4.3–7.0 (Na inversely varies with K)
Unique Identifiers
Mindat ID:
54095
Long-form identifier:
mindat:1:1:54095:7
IMA Classification of UM1997-22-Cl:KNa
IMA status notes:
Unnamed (probably valid)
Optical Data of UM1997-22-Cl:KNa
Type:
Uniaxial (-)
RI values:
n = <1.53
Birefringence:
low
Max. Birefringence:
δ = 0.000
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Optical Extinction:
40o
Comments:
positive elongation
Chemistry of UM1997-22-Cl:KNa
Mindat Formula:
K-Na-Cl (?)
Elements listed:
Crystallography of UM1997-22-Cl:KNa
Crystal System:
Monoclinic
Cell Parameters:
a = 9.11 Å, b = 22.71 Å, c = 24.08 Å
β = 86°
β = 86°
Ratio:
a:b:c = 0.401 : 1 : 1.06
Unit Cell V:
4,969.73 ų (Calculated from Unit Cell)
Comment:
by electron diffraction
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.99 Å | (100) |
| 6.73 Å | (30) |
| 6.27 Å | (10) |
| 5.67 Å | (9) |
| 3.12 Å | (10) |
| 2.60 Å | (10) |
| 2.009 Å | (9) |
| 1.956 Å | (20) |
Comments:
PXRD pattern is rather distinctive
Radioactivity
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 UM1997-22-Cl:KNa
mindat.org URL:
https://www.mindat.org/min-54095.html
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Please feel free to link to this page.
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References for UM1997-22-Cl:KNa
Reference List:
Malinko, S.V., Dubinchuk, V.T., Lisitsyn, A.Ye. (1997): A sodium-potassium chloride intergrown in studenitsite in borate ores of Serbia. Zap. Vseross. Mineral. Obshch. (ZVMO): 126(5): 78–83 (in Russian, with English abs.)(Abs. in: Jambor, J.L., Grew, E.S., Roberts, A.C. (1998): New mineral names. American Mineralogist: 83: 1349)
Localities for UM1997-22-Cl:KNa
Showing 1 localities.
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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.
Serbia | |
| Malinko et al. (1997) +1 other reference |
