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Chromo-alumino-povondraite

A valid IMA mineral species

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Chromo-alumino-povondraite

Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

Chromo-alumino-povondraite, etc.

American #1 Talc Mine, Balmat, Fowler, St. Lawrence County, New York, USA

Chromo-alumino-povondraite

American #1 Talc Mine, Balmat, Fowler, St. Lawrence County, New York, USA

Chromo-alumino-povondraite

Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

Chromo-alumino-povondraite, etc.

American #1 Talc Mine, Balmat, Fowler, St. Lawrence County, New York, USA

Chromo-alumino-povondraite

American #1 Talc Mine, Balmat, Fowler, St. Lawrence County, New York, USA

Chromo-alumino-povondraite

Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

Chromo-alumino-povondraite, etc.

American #1 Talc Mine, Balmat, Fowler, St. Lawrence County, New York, USA

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About Chromo-alumino-povondraiteHide

Formula:

NaCr₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O

Colour:

Green

Lustre:

Vitreous

Hardness:

7½

Specific Gravity:

3.227 (Calculated)

Crystal System:

Trigonal

Member of:

Tourmaline Group

Name:

For the chemical relationship to Povondraite

Type Locality:

ⓘ Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

Tourmaline group.
The Cr analogue of vanadio-oxy-dravite and bosiite.
Ideally, chromo-alumino-povondraite is related to oxy-dravite and oxy-chromium-dravite by the homovalent substitution Cr³⁺ ↔ Al³⁺.

Approved by CNMNC-IMA in 2010 (IMA2009-088), with type locality in Orissa, India, but withdrawn in january 2013 after subsequent analytical work undertaken by the authors showed this material to be a chromium-dravite. Resubmitted as IMA2013-089 with a new type locality, the Pereval marble quarry in Russia.

Tourmaline with chemical compositions classified as chromo-alumino-povondraite can be either Al-dominant or Cr-dominant as a result of the compositional boundaries along the solid solution between Al and Cr3+ that are determined at Y+Z(Cr1.5Al5.5), corresponding to NaY(Cr1.5Al1.5)Z(Al4Mg2)Si6O18(BO3)3(OH)3O, and Y+Z(Cr5Al2), corresponding to NaY(Cr3)Z(Cr2Al2Mg2)Si6O18(BO3)3(OH)3O (Reznitskii et al. 2014).

Unique IdentifiersHide

Mindat ID:

39891

Long-form identifier:

mindat:1:1:39891:0

IMA Classification of Chromo-alumino-povondraiteHide

IMA status:

Approved

IMA Formula:

NaCr³⁺₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O

Approval year:

2013

First published:

2014

Type description reference:

Reznitskii, L., Clark, C. M., Hawthorne, F. C., Grice, J. D., Skogby, H., Halenius, U., Bosi, F. (2014) Chromo-alumino-povondraite, NaCr₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O, a new mineral species of the tourmaline supergroup. American Mineralogist, 99 (8) 1767-1773 doi:10.2138/am.2014.4787

Classification of Chromo-alumino-povondraiteHide

Strunz-mindat (2026):

9.CK.05

9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si₆O₁₈]₁₂- 6-membered single rings, with insular complex anions

Mineral SymbolsHide

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
Capov	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 Chromo-alumino-povondraiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Green

Streak:

Pale-green

Hardness:

7½ on Mohs scale

Comment:

approximately 7½

Tenacity:

Brittle

Fracture:

Conchoidal

Density:

3.227 g/cm³ (Calculated)

Optical Data of Chromo-alumino-povondraiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.745(5) n_ε = 1.685(5)

Max. Birefringence:

δ = 0.060
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.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

Very High (positive)
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.

Focus:

In focus

Interference Figure:

This shows the idealized uniaxial interference figure - the conoscopic (convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis centred and vertical. The coloured rings are isochromatics, computed with the same physics as the Michel-Lévy bar above; the dark cross is the isogyre.

For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.

Thickness: 30 µm

Pleochroism:

Visible

Comments:

O = emerald green and E = pale yellowish green.

Chemistry of Chromo-alumino-povondraiteHide

Mindat Formula:

NaCr₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O

Element Weights:

Element	% weight
O	47.899 %
Si	16.274 %
Cr	15.065 %
Al	10.423 %
Mg	4.695 %
B	3.132 %
Na	2.220 %
H	0.292 %

Calculated from ideal end-member formula.

Elements listed:

Al, B, Cr, H, Mg, Na, O, Si - search for minerals with similar chemistry

Crystallography of Chromo-alumino-povondraiteHide

Crystal System:

Trigonal

Class (H-M):

3m - Ditrigonal Pyramidal

Space Group:

R3m

Setting:

R3m

Cell Parameters:

a = 16.0277(2) Å, c = 7.3085(1) Å

Ratio:

a:c = 1 : 0.456

Unit Cell V:

1625.93 Å³

Morphology:

Elongated {1010} and {1120} prisms terminated by a prominent {0001} pedion and small, minor {1011} pyramidal faces.

Crystal StructureHide

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Unit Cell | Unit Cell Packed
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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)
0020335	Chromo-alumino-povondraite	Reznitskii L, Clark C M, Hawthorne F C, Grice J D, Skogby H, Halenius U, Bosi F (2014) Chromo-alumino-povondraite, NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup American Mineralogist 99 1767-1773		2014	Sludyanka, Lake Baikal, Russia	0	293
0020261	Chromo-alumino-povondraite	Bosi F, Skogby H, Halenius U, Reznitskii L (2013) Crystallographic and spectroscopic characterization of Fe-bearing chromo-alumino-povondraite and its relations with oxy-chromium-dravite and oxy-dravite American Mineralogist 98 1557-1564		2013	Sludyanka crystalline complex, Lake Baikal, Russia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Chromo-alumino-povondraite'
loop_
_publ_author_name
'Reznitskii L'
'Clark C M'
'Hawthorne F C'
'Grice J D'
'Skogby H'
'Halenius U'
'Bosi F'
_journal_name_full 'American Mineralogist'
_journal_volume 99 
_journal_year 2014
_journal_page_first 1767
_journal_page_last 1773
_publ_section_title
;
 Chromo-alumino-povondraite, NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species
 of the tourmaline supergroup
;
_database_code_amcsd 0020335
_chemical_compound_source 'Sludyanka, Lake Baikal, Russia'
_chemical_formula_sum 'Na.87 Ca.07 K.02 Cr3.47 Mg2.25 Al3.08 V.22 Fe.01 B3 Si5.96 O30.75 F.25 H3.02'
_cell_length_a 16.0277
_cell_length_b 16.0277
_cell_length_c 7.30850
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 1625.928
_exptl_crystal_density_diffrn      3.227
_symmetry_space_group_name_H-M 'R 3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,2/3+y,2/3+z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
NaX   0.00000   0.00000   0.22801   0.87000   0.02030
CaX   0.00000   0.00000   0.22801   0.07000   0.02030
KX   0.00000   0.00000   0.22801   0.02000   0.02030
CrY   0.12380   0.06190   0.63723   0.76333   0.00552
MgY   0.12380   0.06190   0.63723   0.23667   0.00552
AlZ   0.29790   0.26191   0.60938   0.50667   0.00450
MgZ   0.29790   0.26191   0.60938   0.25667   0.00450
CrZ   0.29790   0.26191   0.60938   0.19667   0.00450
VZ   0.29790   0.26191   0.60938   0.03667   0.00450
FeZ   0.29790   0.26191   0.60938   0.00167   0.00450
B   0.10993   0.21986   0.45490   1.00000   0.00720
Si   0.19043   0.18870   0.00000   0.99333   0.00570
Al   0.19043   0.18870   0.00000   0.00667   0.00570
O1   0.00000   0.00000   0.76610   0.73000   0.00720
F1   0.00000   0.00000   0.76610   0.25000   0.00720
O-H1   0.00000   0.00000   0.76610   0.02000   0.00720
O2   0.06037   0.12074   0.48900   1.00000   0.00680
O3   0.25735   0.12868   0.51027   1.00000   0.01050
H3   0.25750   0.12870   0.39500   1.00000   0.01600
O4   0.09256   0.18511   0.07144   1.00000   0.01060
O5   0.18285   0.09142   0.09074   1.00000   0.01000
O6   0.19226   0.18294   0.78002   1.00000   0.00773
O7   0.28334   0.28296   0.07444   1.00000   0.00938
O8   0.20763   0.26830   0.43859   1.00000   0.01093
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
NaX 0.02120 0.02120 0.01860 0.01060 0.00000 0.00000
CaX 0.02120 0.02120 0.01860 0.01060 0.00000 0.00000
KX 0.02120 0.02120 0.01860 0.01060 0.00000 0.00000
CrY 0.00518 0.00495 0.00650 0.00259 -0.00074 -0.00037
MgY 0.00518 0.00495 0.00650 0.00259 -0.00074 -0.00037
AlZ 0.00424 0.00464 0.00442 0.00207 0.00002 0.00026
MgZ 0.00424 0.00464 0.00442 0.00207 0.00002 0.00026
CrZ 0.00424 0.00464 0.00442 0.00207 0.00002 0.00026
VZ 0.00424 0.00464 0.00442 0.00207 0.00002 0.00026
FeZ 0.00424 0.00464 0.00442 0.00207 0.00002 0.00026
B 0.00650 0.00730 0.00830 0.00360 0.00030 0.00050
Si 0.00567 0.00524 0.00609 0.00266 -0.00042 -0.00050
Al 0.00567 0.00524 0.00609 0.00266 -0.00042 -0.00050
O1 0.00710 0.00710 0.00730 0.00350 0.00000 0.00000
F1 0.00710 0.00710 0.00730 0.00350 0.00000 0.00000
O-H1 0.00710 0.00710 0.00730 0.00350 0.00000 0.00000
O2 0.00660 0.00480 0.00830 0.00240 0.00029 0.00060
O3 0.01380 0.01280 0.00540 0.00690 0.00070 0.00036
O4 0.00850 0.01740 0.00870 0.00870 -0.00020 -0.00040
O5 0.01610 0.00790 0.00870 0.00810 0.00110 0.00050
O6 0.01040 0.00800 0.00550 0.00520 -0.00040 -0.00090
O7 0.00840 0.00720 0.00920 0.00150 -0.00240 -0.00050
O8 0.00550 0.00940 0.01730 0.00330 0.00100 0.00310

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
6.487 Å	(60)
5.033 Å	(20)
4.642 Å	(20)
4.262 Å	(30)
4.010 Å	(50)
3.545 Å	(30)
3.013 Å	(35)
2.598 Å	(100)

Locality:

Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

Reference:

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
High-? alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations

Type Occurrence of Chromo-alumino-povondraiteHide

Type Locality:

ⓘ Pereval marble quarry, Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia

General Appearance of Type Material:

Green prismatic crystals.

Place of Conservation of Type Material:

Museum of Mineralogy, Earth Sciences Department, Sapienza University, Rome, Italy, number 33069/1.

Geological Setting of Type Material:

Metaquartzites.

Associated Minerals at Type Locality:

Calcite	Chromite	'Chromium-bearing Phlogopite'	Chromphyllite	'Diopside-Kosmochlor Series'
Dravite	Eskolaite	Oxy-chromium-dravite	Oxy-dravite	Pyrite
Quartz	Rutile	Titanite	Tremolite	Uvarovite

Reference:

Synonyms of Chromo-alumino-povondraiteHide

Cralpoite

IMA2013-089

Other Language Names for Chromo-alumino-povondraiteHide

Dutch:Chromo-alumino-povondraiet

German:Chromo-Alumino-Povondrait

Japanese:クロモアルミポヴォンドラ電気石

Relationship of Chromo-alumino-povondraite to other SpeciesHide

Member of:

Tourmaline Group

Other Members of Tourmaline:

Adachiite	CaFe₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Alumino-oxy-rossmanite	◻Al₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Bosiite	NaFe³⁺₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Celleriite	◻(Mn²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Chromium-dravite	NaMg₃Cr³⁺₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Darrellhenryite	Na(Al₂Li)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Dutrowite	Na(Fe²⁺_2.5Ti_0.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Elbaite	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Ertlite	NaAl₃Al₆(Si₄B₂O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Ferro-bosiite	NaFe³⁺₃(Al₄Fe²⁺₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Feruvite	CaFe²⁺₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Fluor-buergerite	NaFe³⁺₃Al₆(Si₆O₁₈)(BO₃)₃O₃F	Trig. 3m : R3m
Fluor-dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Fluor-elbaite	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Fluor-liddicoatite	Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Fluor-rossmanite	◻(Al₂Li)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m(32/m) : R3m
Fluor-schorl	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Fluor-tsilaisite	NaMn²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Fluor-uvite	CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
Foitite	◻(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Liddicoatite	Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Lucchesiite	CaFe²⁺₃ Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Magnesio-dutrowite	Na(Mg_2.5Ti_0.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Magnesio-lucchesiite	CaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Maruyamaite	K(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Olenite	NaAl₃Al₆(Si₆O₁₈)(BO₃)₃O₃(OH)	Trig. 3m : R3m
Oxy-chromium-dravite	NaCr₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Oxy-dravite	Na(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Oxy-foitite	◻(Fe²⁺Al₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m(32/m) : R3m
Oxy-schorl	Na(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Oxy-vanadium-dravite	NaV₃(V₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Povondraite	NaFe³⁺₃(Mg₂Fe³⁺₄)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Princivalleite	Na(Mn₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Rossmanite	◻(LiAl₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Schorl	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Tsilaisite	NaMn²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
'UM2000-64-SiO:BFeHKMg'	(K,Na)Fe³⁺₃(Mg₂Fe³⁺₄)Si₆O₁₈(BO₃)₃(OH)₃O
'UM2008-52-SiO:AlBCaFFeHLiMgNa'	(Ca,Na,◻)(Al,Li,Fe,Mg)₃Al₆[Si₆O₁₈](BO₃)₃(OH,O)₃(F,O)
'Unnamed (F analogue of feruvite)'	CaFe²⁺₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F
'Unnamed (Mn2+-F-analogue of foitite)'	◻(Mn²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F ?
'Unnamed (Pb-analogue of Fluor-liddicoatite)'	Pb(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F
Uvite	CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
Vanadio-oxy-chromium-dravite	NaV₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
Vanadio-oxy-dravite	NaV₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m

Common AssociatesHide

Associations Based on Photo Data:

3 photos of Chromo-alumino-povondraite associated with 'Chrome-Tremolite'	◻{Ca₂}{Mg₅}(Si₈O₂₂)(OH)₂
1 photo of Chromo-alumino-povondraite associated with Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.CK.	Adachiite	CaFe₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.	Magnesio-dutrowite	Na(Mg_2.5Ti_0.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Darrellhenryite	Na(Al₂Li)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Fluor-schorl	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.	Princivalleite	Na(Mn₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Alumino-oxy-rossmanite	◻Al₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Dutrowite	Na(Fe²⁺_2.5Ti_0.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Ferro-bosiite	NaFe³⁺₃(Al₄Fe²⁺₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Bosiite	NaFe³⁺₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.	Celleriite	◻(Mn²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Feruvite	CaFe²⁺₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Chromium-dravite	NaMg₃Cr³⁺₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Fluor-rossmanite	◻(Al₂Li)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m(32/m) : R3m
9.CK.05	Oxy-schorl	Na(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Fluor-elbaite	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.05	Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Fluor-uvite	CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.05	Foitite	◻(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Vanadio-oxy-dravite	NaV₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Fluor-buergerite	NaFe³⁺₃Al₆(Si₆O₁₈)(BO₃)₃O₃F	Trig. 3m : R3m
9.CK.05	'Unnamed (F analogue of feruvite)'	CaFe²⁺₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F
9.CK.05	Ertlite	NaAl₃Al₆(Si₄B₂O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Tsilaisite	NaMn²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Fluor-liddicoatite	Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.05	Uvite	CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Elbaite	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Fluor-tsilaisite	NaMn²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.05	Oxy-foitite	◻(Fe²⁺Al₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m(32/m) : R3m
9.CK.05	Liddicoatite	Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Vanadio-oxy-chromium-dravite	NaV₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Rossmanite	◻(LiAl₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Oxy-vanadium-dravite	NaV₃(V₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Olenite	NaAl₃Al₆(Si₆O₁₈)(BO₃)₃O₃(OH)	Trig. 3m : R3m
9.CK.05	'UM2000-64-SiO:BFeHKMg'	(K,Na)Fe³⁺₃(Mg₂Fe³⁺₄)Si₆O₁₈(BO₃)₃(OH)₃O
9.CK.05	Magnesio-lucchesiite	CaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Povondraite	NaFe³⁺₃(Mg₂Fe³⁺₄)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Lucchesiite	CaFe²⁺₃ Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Fluor-dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	Trig. 3m : R3m
9.CK.05	Oxy-dravite	Na(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	Oxy-chromium-dravite	NaCr₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.05	'Luinaite-(OH)'	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Mon. m : Bm
9.CK.05	Schorl	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Magnesio-foitite	◻(Mg₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Trig. 3m : R3m
9.CK.05	Maruyamaite	K(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O	Trig. 3m : R3m
9.CK.10	Abenakiite-(Ce)	Na₂₆Ce₆(Si₆O₁₈)(PO₄)₆(CO₃)₆(SO₂)O	Trig. 3 : R3
9.CK.15	Scawtite	Ca₇(Si₃O₉)₂CO₃ · 2H₂O	Mon. 2/m : B2/m
9.CK.20	Thorosteenstrupine	(Ca,Th,Mn)₃Si₄O₁₁F · 6H₂O
9.CK.20	Steenstrupine-(Ce)	Na₁₄Mn²⁺₂Fe³⁺₂Ce₆Zr(Si₆O₁₈)₂(PO₄)₆(PO₃OH)(OH)₂ · 2H₂O	Trig. 3m(32/m) : R3m

Other InformationHide

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 Chromo-alumino-povondraiteHide

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Handbook of Mineralogy page PDF

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References for Chromo-alumino-povondraiteHide

Reference List:

IMA Approvals - February 2010

Henry, Darell J., Novak, Milan, Hawthorne, Frank C., Ertl, Andreas, Dutrow, Barbara L., Uher, Pavel, Pezzotta, Federico (2011) Nomenclature of the tourmaline-supergroup minerals. American Mineralogist, 96 (5) 895-913 doi:10.2138/am.2011.3636

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01

Bosi, F., Skogby, H., Halenius, U., Reznitskii, L. (2013) Crystallographic and spectroscopic characterization of Fe-bearing chromo-alumino-povondraite and its relations with oxy-chromium-dravite and oxy-dravite. American Mineralogist, 98 (8) 1557-1564 doi:10.2138/am.2013.4447

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 18. Mineralogical Magazine, 77 (8) 3249-3258 doi:10.1180/minmag.2013.077.8.15

Vereshchagin, Oleg S., Rozhdestvenskaya, Ira V., Frank-Kamenetskaya, Olga V., Zolotarev, Anatoly A. (2014) Ion substitutions and structural adjustment in Cr-bearing tourmalines. European Journal of Mineralogy, 26 (2) 309-321 doi:10.1127/0935-1221/2014/0026-2372

(2017) Chromo-alumino-povondraite. Handbook of Mineralogy. Mineralogical Society of America

Localities for Chromo-alumino-povondraiteHide

Showing 3 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

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Locality ListHide

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- 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.


India
Odisha Keonjhar District ⓘ ~~Nuasahi Complex~~	IMA Approvals - Feb. 2010

Russia (TL)
Irkutsk Oblast Slyudyansky District Slyudyanka ⓘ Pereval marble quarry (TL)	Mineralogical Magazine +2 other references

USA
New York St. Lawrence County Fowler Balmat ⓘ American #1 Talc Mine	Lupulescu et al. (2011)

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Chromo-alumino-povondraite

About Chromo-alumino-povondraiteHide

Unique IdentifiersHide

IMA Classification of Chromo-alumino-povondraiteHide

Classification of Chromo-alumino-povondraiteHide

Mineral SymbolsHide

Physical Properties of Chromo-alumino-povondraiteHide

Optical Data of Chromo-alumino-povondraiteHide

Chemistry of Chromo-alumino-povondraiteHide

Crystallography of Chromo-alumino-povondraiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of Chromo-alumino-povondraiteHide

Synonyms of Chromo-alumino-povondraiteHide

Other Language Names for Chromo-alumino-povondraiteHide

Relationship of Chromo-alumino-povondraite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for Chromo-alumino-povondraiteHide

References for Chromo-alumino-povondraiteHide

Localities for Chromo-alumino-povondraiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide