Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Čechite

This page is currently not sponsored. Click here to sponsor this page.
František Čech
Formula:
Pb(Fe2+,Mn2+)(VO4)(OH)
System:
Orthorhombic
Colour:
Black
Hardness:
4½ - 5
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.
Isostructural with:

Classification of Čechite

Approved
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
mindat.org URL:
http://www.mindat.org/min-925.html
Please feel free to link to this page.

Type Occurrence of Čechite

Year of Discovery:
1981

Physical Properties of Čechite

Resinous, Sub-Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Black
Streak:
Black
Hardness (Mohs):
4½ - 5
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.88 g/cm3 (Measured)    5.94 g/cm3 (Calculated)

Crystallography of Čechite

Crystal System:
Orthorhombic
Class (H-M):
mmm (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 Volume:
V 437.62 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Rounded crystals; anhedral.
Twinning:
None reported.
Comment:
SG Pnam
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.119 (77)
4.249 (51)
3.345 (42)
3.228 (100)
2.908 (77)
2.663 (53)
2.625 (81)
Comments:
ICDD 35-530

Optical Data of Čechite

Type:
Biaxial
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

Chemical Properties of Čechite

Formula:
Pb(Fe2+,Mn2+)(VO4)(OH)
Essential elements:
All elements listed in formula:

Relationship of Čechite to other Species

Other Members of Group:
AdeliteCaMg(AsO4)(OH)
ArsendescloizitePbZn(AsO4)(OH)
AustiniteCaZn(AsO4)(OH)
CobaltaustiniteCaCo(AsO4)(OH)
ConichalciteCaCu(AsO4)(OH)
DescloizitePb(Zn,Cu)(VO4)(OH)
DuftitePbCu(AsO4)(OH)
GabrielsonitePbFe(AsO4)(OH)
GottlobiteCaMg(VO4,AsO4)(OH)
HermannroseiteCaCu(PO4)(OH)
MottramitePbCu(VO4)(OH)
NickelaustiniteCa(Ni,Zn)(AsO4)(OH)
PyrobelonitePbMn2+(VO4)(OH)
TangeiteCaCu(VO4)(OH)
VuagnatiteCaAl(SiO4)(OH)
8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2
8.BH.10DurangiteNaAl(AsO4)F
8.BH.10IsokiteCaMg(PO4)F
8.BH.10LacroixiteNaAl(PO4)F
8.BH.10MaxwelliteNaFe3+(AsO4)F
8.BH.10PanasqueiraiteCaMg(PO4)(OH,F)
8.BH.10TilasiteCaMg(AsO4)F
8.BH.15DrugmanitePb(Fe3+,Al)2(PO4)2(OH)2
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3
8.BH.20PerloffiteBa(Mn2+,Fe2+)2Fe23+(PO4)3(OH)3
8.BH.20JohntomaiteBaFe22+Fe23+(PO4)3(OH)3
8.BH.25Bertossaite(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4
8.BH.30CarminitePbFe23+(AsO4)2(OH)2
8.BH.30SewarditeCaFe23+(AsO4)2(OH)2
8.BH.35AdeliteCaMg(AsO4)(OH)
8.BH.35ArsendescloizitePbZn(AsO4)(OH)
8.BH.35AustiniteCaZn(AsO4)(OH)
8.BH.35CobaltaustiniteCaCo(AsO4)(OH)
8.BH.35ConichalciteCaCu(AsO4)(OH)
8.BH.35DuftitePbCu(AsO4)(OH)
8.BH.35GabrielsonitePbFe(AsO4)(OH)
8.BH.35NickelaustiniteCa(Ni,Zn)(AsO4)(OH)
8.BH.35TangeiteCaCu(VO4)(OH)
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)
8.BH.35HermannroseiteCaCu(PO4)(OH)
8.BH.40DescloizitePb(Zn,Cu)(VO4)(OH)
8.BH.40MottramitePbCu(VO4)(OH)
8.BH.40PyrobelonitePbMn2+(VO4)(OH)
8.BH.45BayldonitePbCu3(AsO4)2(OH)2
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2
8.BH.50PaganoiteNiBi(AsO4)O
8.BH.55JagoweriteBaAl2(PO4)2(OH)2
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4
8.BH.65LeningraditePbCu3(VO4)2Cl
21.4.1UvaniteU26+V65+O21 · 15H2O (?)
21.4.2Vanuranylite(H3O)2(UO2)2(VO4)2 · 4H2O
21.4.3StrelkiniteNa2(UO2)2(VO4)2 · 6H2O
21.4.4CarnotiteK2(UO2)2(VO4)2 · 3H2O
21.4.5Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2O
21.4.6SengieriteCu2(UO2)2(VO4)2 · 6H2O
21.4.7MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
21.4.8TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
21.4.9RauviteCa(UO2)2(V10O28) · 16H2O
21.4.10Francevillite(Ba,Pb)(UO2)2(VO4)2 · 5H2O
21.4.11MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
21.4.12VanuraliteAl(UO2)2(VO4)2(OH) · 11H2O
21.4.13CurienitePb(UO2)2(VO4)2 · 5H2O
21.4.14FritzscheiteMn(UO2)2(PO4,VO4)2 · 10H2O (?)
21.4.15Palenzonaite(Ca,Na)3CaMn22+(VO4)3
21.4.16Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn84+(VO4)16(OH,O)20 · 8H2O
21.4.17PyrobelonitePbMn2+(VO4)(OH)
21.4.18BrackebuschitePb2Mn3+(VO4)2(OH)
21.4.20HeyitePb5Fe22+(VO4)2O4
21.4.21MounanaitePbFe23+(VO4)2(OH,F)2
21.4.22SchubneliteFe3+VO4 · H2O
21.4.23FervaniteFe43+V45+O16 · 5H2O
21.4.24KazakhstaniteFe53+V34+V125+O39(OH)9 · 9H2O
21.4.25Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2O
21.4.26Rusakovite(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
21.4.27KolovratiteNixZny(VO4)0.67(x+y) · nH2O

Other Names for Čechite

Name in Other Languages:
German:Čechit
Russian:Чехит
Spanish:Čechita

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.

References for Čechite

Reference List:
Mrázek, Z. & Táborský, Z. (1981): Neues Jahrb. Mineral., Mh., 1981, 520-528.

Pertlik, F. (1989): Neues Jahrb. Mineral., Mh., 1989, 34-40.

Effenberger, H. (2002): IMA 18th Meeting, Session A12, MM9.

American Mineralogist: 67: 1074.

Internet Links for Čechite

Localities for Čechite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Czech Republic (TL)
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Příbram
        • Vrančice
[Neues Jahrb.(1981) 520-528; Lapis 1995, 12, p.13-24]
J.Hyrsl (1992)
Italy
 
  • Liguria
    • Savona Province
      • Magliolo
Balestra, C. & Armellino, G. (2004): I minerali del giacimento di Isallo. Notiziario di Mineralogia e Paleontologia Ferrania Club, 18, 17-21.
USA
 
  • Nevada
    • Humboldt Co.
      • Iron Point District
        • Valmy
NBMG Spec. Pub. 31 Minerals of Nevada
  • Utah
    • Box Elder Co.
      • Grouse Creek Mts
        • Rosebud District
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 31, 2015 07:53:23 Page generated: August 29, 2015 01:46:33