Čechite (original) (raw)
A valid IMA mineral species
About ČechiteHide
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Lustre:
Resinous, Sub-Metallic
Crystal System:
Orthorhombic
Name:
Named by Zdeněk Mrázek and Zdeněk Táborský in 1981 in honor of František Čech [August 17, 1929 Mèřín near Velké, Mezíříkí, Czech Republic - September 4, 1995], mineralogist, Charles University, Prague, Czech Republic.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:925:6
68edac70-ba03-414f-b58f-a4a83f5c3b99
IMA Classification of ČechiteHide
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Classification of ČechiteHide
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8.BH.40
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.5.2.4
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
21.4.19
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Čec | 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 ČechiteHide
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Fracture:
Irregular/Uneven, Conchoidal
Density:
5.88 g/cm3 (Measured) 5.94 g/cm3 (Calculated)
Optical Data of ČechiteHide
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Anisotropism:
Visible to strong, light gray to dark gray with brownish tint.
Bireflectance:
Very weak to imperceptible.
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 460nm | 16.0% | 18.5% |
| 540nm | 14.8% | 17.6% |
| 580nm | 14.4% | 17.7% |
| 660nm | 15.1% | 18.9% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.9%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Gray white with a yellow tint (Blue light); yellow brown (yellow light); internal reflections vary from white, pale yellow, or rose
Chemistry of ČechiteHide
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Mindat Formula:
PbFe2+(VO4)(OH)
Crystallography of ČechiteHide
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Crystal System:
Orthorhombic
Class (H-M):
m m m _(_2/_m_2/_m_2/m ) - Dipyramidal
Cell Parameters:
a = 7.605(3) Å, b = 9.435(4) Å, c = 6.099(2) Å
Ratio:
a:b:c = 0.806 : 1 : 0.646
Unit Cell V:
437.62 ų (Calculated from Unit Cell)
Morphology:
Rounded crystals; anhedral.
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.119 Å | (77) |
| 4.249 Å | (51) |
| 3.345 Å | (42) |
| 3.228 Å | (100) |
| 2.908 Å | (77) |
| 2.663 Å | (53) |
| 2.625 Å | (81) |
Geological EnvironmentHide
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Type Occurrence of ČechiteHide
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General Appearance of Type Material:
Granular masses up to 3 cm. Rare crystals up to 3 mm long.
Place of Conservation of Type Material:
Charles University, Praha, Czech Republic, 20037 (holotype).
Geological Setting of Type Material:
Old mine dumps of a polymetallic ore deposit.
Associated Minerals at Type Locality:
Other Language Names for ČechiteHide
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Relationship of Čechite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 8.BH. | Crimsonite | PbFe3+2(PO4)2(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) : C c c m |
|---|---|---|---|
| 8.BH. | Reznitskyite | CaMg(VO4)F | Mon. 2/m : _B_2/b |
| 8.BH. | Cuprozheshengite | Pb4CuZn2(AsO4)2(PO4)2(OH)2 | Tric. 1 : _P_1 |
| 8.BH. | Zheshengite | Pb4ZnZn2(AsO4)2(PO4)2(OH)2 | Tric. 1 : _P_1 |
| 8.BH. | Peterchinite | Zn3Zn2(OH)6As[O3(OH)3] | Mon. 2/m : _B_2/m |
| 8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 | Orth. 222 : _C_2221 |
| 8.BH.10 | Durangite | NaAl(AsO4)F | Mon. 2/m : _B_2/b |
| 8.BH.10 | Isokite | CaMg(PO4)F | Mon. 2/m : _B_2/b |
| 8.BH.10 | Lacroixite | NaAl(PO4)F | Mon. 2/m : _B_2/b |
| 8.BH.10 | Maxwellite | NaFe3+(AsO4)F | Mon. 2/m : _P_2/m |
| 8.BH.10 | Panasqueiraite | CaMg(PO4)(OH) | Mon. |
| 8.BH.10 | Kononovite | NaMg(SO4)F | Mon. 2/m : _B_2/b |
| 8.BH.10 | Arsenatrotitanite | NaTi(AsO4)O | Mon. 2/m : _B_2/b |
| 8.BH.15 | Drugmanite | Pb2Fe3+(PO4)(PO3OH)(OH)2 | Mon. 2/m : _P_21/b |
| 8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) | |
| 8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Bjarebyite Group | ||
| 8.BH.20 | Strontioperloffite | SrMn2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Plumboperloffite | PbMn2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Nigelcookite | PbFe2+2V3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.20 | Plumbojohntomaite | PbFe2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : _P_21/m |
| 8.BH.25 | Bertossaite | (Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 8.BH.25 | Palermoite | (Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 8.BH.25 | Natropalermoite | Na2SrAl4(PO4)4(OH)4 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) : C c c m |
| 8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) : C c c m |
| 8.BH.35 | Adelite | CaMg(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Austinite | CaZn(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Conichalcite | CaCu(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Duftite | PbCu(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Gabrielsonite | PbFe3+(As3+O3)O | Orth. m _m_2 : P m _c_21 |
| 8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Tangeite | CaCu(VO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Duftite-alpha | PbCu(AsO4)(OH) | |
| 8.BH.35 | Gottlobite | CaMg(VO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.35 | Hermannroseite | CaCu(PO4)(OH) | Orth. 222 : _P_212121 |
| 8.BH.40 | Descloizite | PbZn(VO4)(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 8.BH.40 | Mottramite | PbCu(VO4)(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 8.BH.40 | Khorixasite | (Bi0.67◻0.33)Cu(VO4)(OH) | Mon. 2/m : _P_2/m |
| 8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 | Mon. 2/m : _B_2/b |
| 8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 | Mon. 2/m : _B_2/m |
| 8.BH.50 | Paganoite | NiBi(AsO4)O | Tric. 1 : _P_1 |
| 8.BH.55 | Harrisonite | Ca(Fe2+,Mg)6(PO4)2(SiO4)2 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 | Tric. |
| 8.BH.60 | Attakolite | CaMn2+Al4(SiO3OH)(PO4)3(OH)4 | Mon. 2/m : _B_2/m |
| 8.BH.65 | Leningradite | PbCu3(VO4)2Cl | Orth. m m m _(_2/_m_2/_m_2/m ) : I b a m |
| 8.BH.70 | Katiarsite | KTiO(AsO4) | Orth. m _m_2 : P n _a_21 |
| 8.BH.70 | Yurgensonite | K2SnTiO2(AsO4)2 | Orth. m _m_2 : P n _a_21 |
| 8.BH.75 | Melanarsite | K3Cu7Fe3+O4(AsO4)4 | Mon. 2/m : _B_2/b |
| 8.BH.80 | Moraskoite | Na2Mg(PO4)F | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 8.BH.80 | Evseevite | Na2Mg(AsO4)F | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 8.BH.85 | Piccoliite | NaCaMn3+2(AsO4)2O(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c m |
Fluorescence of ČechiteHide
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Other InformationHide
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IR Spectrum:
The infra-red spectrum is very similar to those of descloizite and mottramite, giving absorption bands characteristic of the (VO4)-3 group and (OH)-1 group.
Notes:
Dissolves readily in HCl (1:1) or HNO3 (1:1).
Magnetic.
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 ČechiteHide
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References for ČechiteHide
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Localities for ČechiteHide
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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
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- 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.
| Czech Republic (TL) | |
|---|---|
| Central Bohemian Region Příbram District Vrančice ⓘ Alexander Mine (TL) | [Lapis 1995 +1 other reference |
| ⓘ Pošepný vein outcrop (TL) | J.Hyrsl (1992) |
| France | |
| Occitanie Aveyron Villefranche-de-Rouergue Saint-Parthem Port-d'Agrès ⓘ L'Hermie quarry ? | Queneau (n.d.) |
| Italy | |
| Liguria Savona Province Magliolo Isallo ⓘ Isallo baryte deposit | Balestra C. (2004) +1 other reference |
| Spain | |
| Catalonia Tarragona Priorat Ulldemolins ⓘ Maria Magdalena Mine |
Rosell et al. (2017) |
| USA | |
| Nevada Humboldt County Iron Point Mining District Valmy ⓘ Silver Coin Mine | Castor et al. (2004) |
| Lyon County Churchill Mining District ⓘ Old Soldier mine (Lost Soldier mine) | Storm Sears collection |
| Utah Box Elder County Grouse Creek Mts (Grouse Creek Range) Rosebud Mining District ⓘ |