Alsakharovite-Zn
A valid IMA mineral species
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About Alsakharovite-Zn
Formula:
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
Colour:
White, light brown, colourless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.9
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Aleksey Sergeyevich Sakharov (Алексей Сергеевич Сахаров) (18 March 1910 - 16 February 1996, Russia), geologist at the Kola Branch of the USSR Academy of Sciences, who worked on the Lovozero massif. The suffix denotes the dominant extra-framework cation, following the IMA recommended nomeclature for labuntsovite-group minerals.
Gutkovaite structural type.
Unique Identifiers
Mindat ID:
26417
Long-form identifier:
mindat:1:1:26417:2
GUID
(UUID V4):
(UUID V4):
f124185a-0f67-4edc-b20e-453474a7c475
IMA Classification of Alsakharovite-Zn
Approved
IMA Formula:
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
Approval year:
2002
First published:
2003
Type description reference:
Classification of Alsakharovite-Zn
9.CE.30h
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
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 |
---|---|---|
Ask-Zn | 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 Alsakharovite-Zn
Vitreous
Transparency:
Transparent, Translucent
Colour:
White, light brown, colourless
Streak:
White
Hardness:
5 on Mohs scale
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.9 g/cm3 (Measured) 2.94 g/cm3 (Calculated)
Optical Data of Alsakharovite-Zn
Type:
Biaxial (+)
RI values:
nα = 1.680(1) nβ = 1.687(2) nγ = 1.787(5)
2V:
Measured: 25° (10), Calculated: 31°
Max Birefringence:
δ = 0.107
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:
High
Dispersion:
None
Optical Extinction:
Y = b.
Pleochroism:
Non-pleochroic
Chemistry of Alsakharovite-Zn
Mindat Formula:
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
Crystallography of Alsakharovite-Zn
Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bm
Setting:
Cm
Cell Parameters:
a = 14.495 Å, b = 13.945 Å, c = 7.838 Å
β = 117.75°
β = 117.75°
Ratio:
a:b:c = 1.039 : 1 : 0.562
Unit Cell V:
1402 ų
Z:
2
Morphology:
Flattened prismatic crystals elongated along [010].
Twinning:
Microtwinned on (001) and (401).
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0018493 | Alsakharovite-Zn | Rozenberg K A, Rastsvetaeva R K, Pekov I V, Chukanov N V (2002) New Zn-rich representative of the labuntsovite group: crystal structure and microtwinning Doklady Chemistry 383 110-113 | 2002 | Lovozero alkaline massif, Kola Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.96 Å | (100) |
3.11 Å | (90) |
3.21 Å | (80) |
2.50 Å | (40) |
1.70 Å | (40) |
2.60 Å | (35) |
1.74 Å | (30) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Alsakharovite-Zn
General Appearance of Type Material:
Coarse, flattened-prismatic crystals up to 8 x 2 x 0.5 mm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Hydrothermal mineral found in cavities of eudialyte-aegirine-feldspar pegmatite in an alkaline massif.
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., N.V. Chukanov, A.E. Zadov, K.A. Rozenberg, R.K. Rastsvetaeva (2003) Alsakharovite-Zn, NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7 H2O, a new mineral of the labuntsovite group from Lovozero massif, Kola Peninsula: Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (and Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva): 132(1): 52-58.
Synonyms of Alsakharovite-Zn
Other Language Names for Alsakharovite-Zn
Relationship of Alsakharovite-Zn to other Species
Member of:
Other Members of this group:
Gutkovaite-Mn | K2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O | Mon. m : Bm |
Neskevaaraite-Fe | K3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O | Mon. m : Bm |
Related Minerals - Strunz-mindat Grouping
9.CE. | Dutkevichite-(Ce) | NaZnBa2Ce2Ti2Si8O26F · H2O |
9.CE. | Niobobaotite | Ba4(Ti2.5Fe2+1.5)Nb4Si4O28Cl |
9.CE.05 | Papagoite | CaCu[H3AlSi2O9] |
9.CE.10 | Verplanckite | Ba4Mn2+2Si4O12(OH,H2O)3Cl3 |
9.CE.15 | Baotite | Ba4(Ti,Nb,W)8O16(SiO3)4Cl |
9.CE.20 | Nagashimalite | Ba4(V,Ti)4B2Si8O27(O,OH)2Cl |
9.CE.20 | Taramellite | Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx |
9.CE.20 | Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx |
9.CE.25 | Bario-orthojoaquinite | (Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O |
9.CE.25 | Byelorussite-(Ce) | NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O |
9.CE.25 | Joaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O |
9.CE.25 | Orthojoaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O |
9.CE.25 | Strontiojoaquinite | Sr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O |
9.CE.25 | Strontio-orthojoaquinite | (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O |
9.CE.25 | Orthojoaquinite-(La) | NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O |
9.CE.30a | Unnamed (Ca-Na-ordered analogue of Korobitsynite) | (Ca,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O |
9.CE.30e | Labuntsovite-Mn | Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O |
9.CE.30a | Nenadkevichite | (Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O |
9.CE.30d | Lemmleinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O |
9.CE.30a | Korobitsynite | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O |
9.CE.30c | Kuzmenkoite-Mn | K2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O |
9.CE.30b | Vuoriyarvite-K | K2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2O |
9.CE.30b | Tsepinite-Na | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30c | Karupmøllerite-Ca | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O |
9.CE.30e | Labuntsovite-Mg | Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
9.CE.30e | Labuntsovite-Fe | Na4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
9.CE.30d | Lemmleinite-Ba | Na2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
9.CE.30c | Gjerdingenite-Fe | K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30h | Neskevaaraite-Fe | K3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O |
9.CE.30b | Tsepinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30b | Paratsepinite-Ba | Ba4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O |
9.CE.30b | Tsepinite-Ca | Ca(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30c | Gjerdingenite-Mn | K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30c | Lepkhenelmite-Zn | (Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O |
9.CE.30b | Tsepinite-Sr | Sr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30b | Paratsepinite-Na | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8 |
9.CE.30f | Paralabuntsovite-Mg | Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O |
9.CE.30c | Gjerdingenite-Ca | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30c | Gjerdingenite-Na | K2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O |
9.CE.30h | Gutkovaite-Mn | K2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
9.CE.30c | Kuzmenkoite-Zn | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4 · 6-8H2O |
9.CE.30g | Organovaite-Mn | K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2O |
9.CE.30g | Organovaite-Zn | K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30g | Parakuzmenkoite-Fe | (K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2O |
9.CE.30c | Burovaite-Ca | (Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O |
9.CE.45 | Komarovite | (Ca,Mn)(Nb,Ti)2[Si2O7](O,F)3 · 3.5H2O |
9.CE.45 | Natrokomarovite | (Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O |
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 Alsakharovite-Zn
mindat.org URL:
https://www.mindat.org/min-26417.html
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References for Alsakharovite-Zn
Reference List:
Chukanov, Nikita V., Pekov, Igor V., Khomyakov, Alexander P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy, 14 (1) 165-173 doi:10.1127/0935-1221/2002/0014-0165
Localities for Alsakharovite-Zn
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.
Russia (TL) | |
| Pekov et al. (2003) +1 other reference |
Pekov et al. (2004) |
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Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia