Kobyashevite (original) (raw)

A valid IMA mineral species

Warning: Directory /home/mindat/www/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer/URI not writable, please chmod to 777 in /home/mindat/www/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php on line 297

Warning: Directory /home/mindat/www/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer/CSS not writable, please chmod to 777 in /home/mindat/www/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php on line 297

About KobyasheviteHide

This section is currently hidden. Click the show button to view.

Formula:

Cu5(SO4)2(OH)6 · 4H2O

Formula may be written CuCu4(SO4)2(OH)6·4H2O, to better show relation to devilline.

Colour:

Bluish-green to turquoise-coloured

Specific Gravity:

3.16 (Calculated)

Name:

Named in honor of Yurii Stepanovich Kobyashev (Юрий Степанович Кобяшев) (1935-2009) Russian mineralogist and famous collector of minerals, researcher at the Natural Science Museum of the Ilmen (Ilmensky) Reserve from 1988 to 2007, in recognition of his contribution to the study of the mineralogy of the Urals.

Known also as an anthropogenic/synthetic phase found on altered copper and bronze pieces ("strandbergite").

Decomposes in water within 10 min (Yoder et al., 2007).

Fakes

It is very easy to grow specimens artificially using copper sulphate solution to attack existing calcite crystals. Specimens sold from Ojuela mine, Mexico in recent years are highly likely to be manufactured in such a way. See https://www.mindat.org/mesg-537446.html

Unique IdentifiersHide

This section is currently hidden. Click the show button to view.

Long-form identifier:

mindat:1:1:42367:8

dce349f3-47a4-45af-865d-5607032af5f9

IMA Classification of KobyasheviteHide

This section is currently hidden. Click the show button to view.

Type description reference:

Pekov, Igor V., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Belakovskiy, Dmitriy I., Chukanov, Nikita V., Kasatkin, Anatoly V., Kuznetsov, Aleksey M., Pushcharovsky, Dmitry Y. (2013) Kobyashevite, Cu5(SO4)2(OH)6·4H2O, a new devilline-group mineral from the Vishnevye Mountains, South Urals, Russia. Mineralogy and Petrology, 107 (2) 201-210 doi:10.1007/s00710-012-0236-4

Classification of KobyasheviteHide

This section is currently hidden. Click the show button to view.

7.DD.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra

Mineral SymbolsHide

This section is currently hidden. Click the show button to view.

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Kby	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 KobyasheviteHide

This section is currently hidden. Click the show button to view.

Colour:

Bluish-green to turquoise-coloured

Cleavage:

Distinct/Good
{010}

Density:

3.16 g/cm3 (Calculated)

Comment:

Could not be measured

Optical Data of KobyasheviteHide

This section is currently hidden. Click the show button to view.

RI values:

_n_α = 1.602(4) _n_β = 1.666(5) _n_γ = 1.679(5)

2V:

Measured: 50° (10), Calculated: 47°

δ = 0.077

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Optical Extinction:

Z is close to the crystal elongation direction

Comments:

Medium, Z > Y > X; the mineral is bluish-green in all sections but the intensity depends on orientation.

Chemistry of KobyasheviteHide

This section is currently hidden. Click the show button to view.

Mindat Formula:

Cu5(SO4)2(OH)6 · 4H2O

Formula may be written CuCu4(SO4)2(OH)6·4H2O, to better show relation to devilline.

Crystallography of KobyasheviteHide

This section is currently hidden. Click the show button to view.

Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 6.0731(6) Å, b = 11.0597(13) Å, c = 5.5094(6) Å
α = 102.883(9)°, β = 92.348(8)°, γ = 92.597(9)°

Ratio:

a:b:c = 0.549 : 1 : 0.498

Crystal StructureHide

This section is currently hidden. Click the show button to view.

Load
Unit Cell |Unit Cell Packed
2x2x2 |3x3x3 |4x4x4

View
CIF File Best |x |y |z |a |b |c

Rotation
Stop |Start

Labels
Console Off |On |Grey |Yellow

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0018667	Kobyashevite	Strandberg H, Langer V, Johansson L G (1995) Structure of Cu2.5(OH)3SO42H2O: a novel corrosion product of copper* Acta Chemica Scandinavica 49 5-10	1995	synthetic	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

This section is currently hidden. Click the show button to view.

Powder Diffraction Data:

d-spacing	Intensity
10.84 Å	(100)
5.399 Å	(40)
5.178 Å	(12)
3.590 Å	(16)
2.691 Å	(16)
2.653 Å	(12)
2.583 Å	(12)
2.425 Å	(12)

Geological EnvironmentHide

This section is currently hidden. Click the show button to view.

Type Occurrence of KobyasheviteHide

This section is currently hidden. Click the show button to view.

General Appearance of Type Material:

Elongated crystals up to 0.2 mm typically curved or split and combined into thin crusts up to 1 × 2 mm.

Place of Conservation of Type Material:

The type specimen is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4152/1.

Geological Setting of Type Material:

In cavities of a calcite-quartz vein.

Associated Minerals at Type Locality:

Reference:

Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Chukanov, N.V., Kasatkin, A.V., Kuznetsov, A.M., Pushcharovsky, D.Y. (2013): Kobyashevite, Cu5(SO4)2(OH)6•4H2O, a new devilline-group mineral from the Vishnevye Mountains, South Urals, Russia. Mineralogy and Petrology, 107, 201-210.

Synonyms of KobyasheviteHide

This section is currently hidden. Click the show button to view.

Relationship of Kobyashevite to other SpeciesHide

This section is currently hidden. Click the show button to view.

Other Members of this group:

Common AssociatesHide

This section is currently hidden. Click the show button to view.

Associated Minerals Based on Photo Data:

This section is currently hidden. Click the show button to view.

7.DD.	Asagiite	NiCu4(SO4)2(OH)6 · 6H2O	Mon. 2/m : _P_21/b
7.DD.05	Felsőbányaite	Al4(SO4)(OH)10 · 4H2O	Mon. 2 : _P_21
7.DD.07	Llantenesite	Cu6Al[SeO4](OH)12Cl · 3H2O	Trig. 3_m_ : P_31_c
7.DD.10	Langite	Cu4(SO4)(OH)6 · 2H2O	Mon. m
7.DD.10	Posnjakite	Cu4(SO4)(OH)6 · H2O	Mon. m : P m
7.DD.10	Wroewolfeite	Cu4(SO4)(OH)6 · 2H2O	Mon. m : P m
7.DD.10	Gobelinite	CoCu4(SO4)2(OH)6 · 6H2O	Mon. 2/m : _P_21/m
7.DD.10	Fehrite	MgCu4(SO4)2(OH)6 · 6H2O	Mon. 2/m : _P_21/b
7.DD.15	Spangolite	Cu6Al(SO4)(OH)12Cl · 3H2O	Trig. 3_m_ : P_31_c
7.DD.15	Unnamed (Dimorph of Devilline)	CaCu4(SO4)2(OH)6 · 3H2O	Mon. 2/m : _P_21/b
7.DD.20	Ktenasite	ZnCu4(SO4)2(OH)6 · 6H2O	Mon. 2/m : _P_21/b
7.DD.25	Christelite	Cu2Zn3(SO4)2(OH)6 · 4H2O	Tric. 1 : _P_1
7.DD.30	Campigliaite	Mn2+Cu4(SO4)2(OH)6 · 4H2O	Mon. 2 : _B_2
7.DD.30	Devilline	CaCu4(SO4)2(OH)6 · 3H2O	Mon. 2/m : _P_21/b
7.DD.30	Orthoserpierite	Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O	Orth. m _m_2 : P c _a_21
7.DD.30	Serpierite	Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O	Mon. 2/m : _B_2/b
7.DD.30	Niedermayrite	CdCu4(SO4)2(OH)6 · 4H2O	Mon. 2/m : _P_21/m
7.DD.30	Edwardsite	Cu3Cd2(SO4)2(OH)6 · 4H2O	Mon. 2/m : _P_21/b
7.DD.35	Carrboydite	(Ni1-xAlx)(SO4)x/2(OH)2 · nH2O	Hex.
7.DD.35	Glaucocerinite	(Zn1-xAlx)(OH)2(SO4)x/2 · nH2O	Hex.
7.DD.35	Honessite	(Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O	Trig.
7.DD.35	Hydrohonessite	(Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O	Hex.
7.DD.35	Motukoreaite	Mg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O	Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35	Mountkeithite	[(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2O	Hex.
7.DD.35	Shigaite	Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O	Trig. 3 : _R_3
7.DD.35	Wermlandite	Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O	Trig. 3_m_ _(_32/m ) : _P_3_c_1
7.DD.35	Woodwardite	Cu1-xAlx(OH)2(SO4)x/2 · nH2O	Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35	Zincaluminite	(Zn1-xAlx)(SO4)x/2(OH)2 · nH2O
7.DD.35	Hydrowoodwardite	(Cu1-xAlx)(OH)2[SO4]x/2 · nH2O	Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35	Zincowoodwardite	Zn1-xAlx(OH)2[SO4]x/2 · nH2O	Trig.
7.DD.35	Natroglaucocerinite	Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O	Hex.
7.DD.35	Nikischerite	Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O	Trig. 3 : _R_3
7.DD.40	Isselite	Cu6(SO4)(OH)10 · 5H2O	Orth. m _m_2 : P m _n_21
7.DD.40	Lawsonbauerite	(Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2O	Mon. 2/m : _P_21/b
7.DD.40	Torreyite	(Mg,Mn2+)7◻2Mn2+2Zn4(SO4)2(OH)22 · 8H2O	Mon. 2/m : _P_21/b
7.DD.45	Mooreite	Mg9◻2Mn2Zn4(SO4)2(OH)26 · 8H2O	Mon. 2/m : _P_2/b
7.DD.45	Hodgesmithite	(Cu,Zn)6Zn(SO4)2(OH)10 · 3H2O	Trig. 3 : _P_3
7.DD.47	Lahnsteinite	Zn4(SO4)(OH)6 · 3H2O	Tric. 1 : _P_1
7.DD.50	Namuwite	Zn4(SO4)(OH)6 · 4H2O	Trig. 3 : _P_3
7.DD.50	Minohlite	(Cu,Zn)7(SO4)2(OH)10 · 8H2O	Hex.
7.DD.52	Lauraniite	Cu6Cd2(SO4)2(OH)12 · 5H2O	Mon. 2/m : _P_21/b
7.DD.55	Bechererite	Zn7Cu(OH)13[(SiO(OH)3(SO4)]	Trig. 3 : _P_3
7.DD.60	Ramsbeckite	(Cu,Zn)15(SO4)4(OH)22 · 6H2O	Mon. 2/m
7.DD.65	Vonbezingite	Ca6Cu3(SO4)3(OH)12 · 2H2O	Mon. 2/m : _P_21/b
7.DD.70	Redgillite	Cu6(SO4)(OH)10 · H2O	Mon. 2/m : _P_21/b
7.DD.75	Chalcoalumite	CuAl4(SO4)(OH)12 · 3H2O	Mon. 2 : _P_21
7.DD.75	Nickelalumite	NiAl4(SO4)(OH)12(H2O)3	Mon. 2/m
7.DD.75	Kyrgyzstanite	ZnAl4(SO4)(OH)12 · 3H2O	Mon. 2/m
7.DD.80	Guarinoite	Zn6(SO4)(OH)10 · 5H2O	Hex.
7.DD.80	Schulenbergite	(Cu,Zn)7(SO4)2(OH)10 · 3H2O	Trig. 3
7.DD.80	Thérèsemagnanite	NaCo4(SO4)(OH)6Cl · 6H2O	Trig. 3 : _P_3
7.DD.80	UM1992-30-SO:CCuHZn	(Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2O	Trig. 3 : _P_3
7.DD.85	Montetrisaite	Cu6(SO4)(OH)10 · 2H2O	Orth. m _m_2 : C m _c_21

Fluorescence of KobyasheviteHide

This section is currently hidden. Click the show button to view.

Other InformationHide

This section is currently hidden. Click the show button to view.

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 KobyasheviteHide

This section is currently hidden. Click the show button to view.

References for KobyasheviteHide

This section is currently hidden. Click the show button to view.

Reference List:

Strandberg, Helena, Langer, Vratislav, Johansson, Lars-Gunnar, Bálint, József, Fogassy, Elemér, Christensen, Lene Krogh, Napoli, Anna, Sindona, Giovanni, Aksnes, Dagfinn W., Francis, George W., Aaberg, Atle (1995) Structure of Cu2.5(OH)3SO4.2H2O: a Novel Corrosion Product of Copper. Acta Chemica Scandinavica, 49. 5-10 doi:10.3891/acta.chem.scand.49-0005

Yoder, C. H., Agee, T. M., Ginion, K. E., Hofmann, A. E., Ewanichak, J. E., Schaeffer, C. D., Carroll, M. J., Schaeffer, R. W., McCaffrey, P. F. (2007) The relative stabilities of the copper hydroxyl sulphates. Mineralogical Magazine, 71 (5) 571-577 doi:10.1180/minmag.2007.071.5.571

Localities for KobyasheviteHide

This section is currently hidden. Click the show button to view.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

This section is currently hidden. Click the show button to view.

- 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.

Mexico
Durango Mapimí Municipality Mapimí ⓘ Ojuela Mine ?	RRUFF database. Eugene Schlepp specimen.
Russia (TL)
Chelyabinsk Oblast Vishnevye Mountains Buldym Lake ⓘ Kapital'naya mine (TL)	Williams et al. (2011) +1 other reference
USA
California Inyo County Inyo Mts (Inyo Range) Malpais Mesa ⓘ Santa Rosa Mine (Lee-Santa Rosa Mine; Santa Rosa Mines)	Kampf et al. (2016) +1 other reference

Kobyashevite (original) (raw)

About KobyasheviteHide

Fakes

Unique IdentifiersHide

IMA Classification of KobyasheviteHide

Classification of KobyasheviteHide

Mineral SymbolsHide

Physical Properties of KobyasheviteHide

Optical Data of KobyasheviteHide

Chemistry of KobyasheviteHide

Crystallography of KobyasheviteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of KobyasheviteHide

Synonyms of KobyasheviteHide

Relationship of Kobyashevite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of KobyasheviteHide

Other InformationHide

Internet Links for KobyasheviteHide

References for KobyasheviteHide

Localities for KobyasheviteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide