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Novograblenovite
A valid IMA mineral species
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Prokopiy T. Novograblenov
Formula:
(NH4)MgCl3 · 6H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
1 - 2
Specific Gravity:
1.504 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Prokopiy Trifonovich Novograblenov (Прокопий Трифонович Новограбленов) (14 August 1892, Petropavlovsk, Russian Empire – 1 January 1934, Petropavlovsk, USSR), one of the researchers of the Kamchatka Peninsula, a teacher, naturalist, geographer, and geologist, and author of the most important catalogue of volcanoes on the Kamchatka Peninsula.
Type Locality:
Dimorph of:
Unique Identifiers
Mindat ID:
52169
Long-form identifier:
mindat:1:1:52169:7
IMA Classification of Novograblenovite
Approved
IMA Formula:
(N3-H4)MgCl3(H2O)6
Approval year:
2017
First published:
2019
Type description reference:
Okrugin, Viktor M., Kudaeva, Sharapat S., Karimova, Oxana V., Yakubovich, Olga V., Belakovskiy, Dmitry I., Chukanov, Nikita V., Zolotarev, Andrey A., Gurzhiy, Vladislav V., Zinovieva, Nina G., Shiryaev, Andrey A., Kartashov, Pavel M. (2019) The new mineral novograblenovite, (NH4,K)MgCl3·6H2O from the Tolbachik volcano, Kamchatka, Russia: mineral description and crystal structure. Mineralogical Magazine, 83 (2) 223-231 doi:10.1180/mgm.2018.88
Classification of Novograblenovite
3.BA.15
3 : HALIDES
B : Simple halides, with H2O
A : M:X = 1:1 and 2:3
3 : HALIDES
B : Simple halides, with H2O
A : M:X = 1:1 and 2:3
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ngb | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Novograblenovite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
1 - 2 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
Not observed
Comment:
Thin needles are flexible, fracture is described as even
Density:
1.504 g/cm3 (Calculated)
Comment:
Calculated from empirical formula
Optical Data of Novograblenovite
Type:
Biaxial (+)
RI values:
nα = 1.469(2) nβ = 1.479(2) nγ = 1.496(2)
2V:
Measured: 80° (10), Calculated: 75.7°
Max. Birefringence:
δ = 0.027
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
Very weak, r > v
Pleochroism:
Non-pleochroic
Comments:
c^Z = 40°
Chemistry of Novograblenovite
Mindat Formula:
(NH4)MgCl3 · 6H2O
Element Weights:
Crystallography of Novograblenovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 9.2734(3) Å, b = 9.5176(3) Å, c = 13.2439(4) Å
β = 90.187(2)°
β = 90.187(2)°
Ratio:
a:b:c = 0.974 : 1 : 1.392
Unit Cell V:
1168.91 ų
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.883 Å | (22) |
| 3.825 Å | (26) |
| 3.330 Å | (100) |
| 2.976 Å | (45) |
| 2.353 Å | (29) |
| 2.254 Å | (18) |
| 2.024 Å | (17) |
| 1.997 Å | (25) |
Reference:
Okrugin, Viktor M., Kudaeva, Sharapat S., Karimova, Oxana V., Yakubovich, Olga V., Belakovskiy, Dmitry I., Chukanov, Nikita V., Zolotarev, Andrey A., Gurzhiy, Vladislav V., Zinovieva, Nina G., Shiryaev, Andrey A., Kartashov, Pavel M. (2019) The new mineral novograblenovite, (NH4,K)MgCl3·6H2O from the Tolbachik volcano, Kamchatka, Russia: mineral description and crystal structure. Mineralogical Magazine, 83 (2) 223-231 doi:10.1180/mgm.2018.88
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Novograblenovite
General Appearance of Type Material:
Prismatic, needle-like transparent crystals
Place of Conservation of Type Material:
Collection of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5003/1
Associated Minerals at Type Locality:
Reference:
Okrugin, Viktor M., Kudaeva, Sharapat S., Karimova, Oxana V., Yakubovich, Olga V., Belakovskiy, Dmitry I., Chukanov, Nikita V., Zolotarev, Andrey A., Gurzhiy, Vladislav V., Zinovieva, Nina G., Shiryaev, Andrey A., Kartashov, Pavel M. (2019) The new mineral novograblenovite, (NH4,K)MgCl3·6H2O from the Tolbachik volcano, Kamchatka, Russia: mineral description and crystal structure. Mineralogical Magazine, 83 (2) 223-231 doi:10.1180/mgm.2018.88
Synonyms of Novograblenovite
Other Language Names for Novograblenovite
Dutch:Novograblenoviet
German:Novograblenovit
Related Minerals - Strunz-mindat Grouping
| 3.BA.05 | Hydrohalite | NaCl · 2H2O |
| 3.BA.10 | Carnallite | KMgCl3 · 6H2O |
| 3.BA.20 | Cryobostryxite | KZnCl3 · 2H2O |
Fluorescence of Novograblenovite
None
Other Information
Thermal Behaviour:
Two-step dehydration at 155 and 193°C and sublimation of NH4Cl at 341°C.
Notes:
Soluble in water, alcohol, and acetone; it dissolves in hydrochloric acid without gas evolution.
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 Novograblenovite
mindat.org URL:
https://www.mindat.org/min-52169.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Novograblenovite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017, CNMNC Newsletter No 39. Mineralogical Magazine, 81 (5) 1279-1286 doi:10.1180/minmag.2017.081.072
Okrugin, Viktor M., Kudaeva, Sharapat S., Karimova, Oxana V., Yakubovich, Olga V., Belakovskiy, Dmitry I., Chukanov, Nikita V., Zolotarev, Andrey A., Gurzhiy, Vladislav V., Zinovieva, Nina G., Shiryaev, Andrey A., Kartashov, Pavel M. (2019) The new mineral novograblenovite, (NH4,K)MgCl3·6H2O from the Tolbachik volcano, Kamchatka, Russia: mineral description and crystal structure. Mineralogical Magazine, 83 (2) 223-231 doi:10.1180/mgm.2018.88
Localities for Novograblenovite
Showing 2 localities.
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.
Russia (TL) | |
| Okrugin et al. (2019) |
The Moon | |
| Jin et al. (2024) |
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