Holfertite (original) (raw)

A valid IMA mineral species

08327020015780417286355.jpg

02479360014947875232630.jpg

About HolfertiteHide

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

Formula:

CaxU6+2-xTi(O8-xOH4x) · 3H2O

Colour:

Canary yellow to orange yellow

Name:

Named in honor of John W. Holfert (b. 1949), for his significant contributions to the mineralogy and geology of the Thomas Range, USA.

A hydrated Ca-U-Ti oxide/hydroxide.

May not be the same material per Foord from location.

Unique IdentifiersHide

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

Long-form identifier:

mindat:1:1:11514:0

02c40aa7-1bc3-4d9f-a89f-895d9f06fd91

IMA Classification of HolfertiteHide

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

IMA Formula:

(UO2)1.75Ca0.25TiO4 · 3H2O

Classification of HolfertiteHide

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

4.GB.70

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra

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
Hlf 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 HolfertiteHide

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

Transparency:

Transparent, Translucent

Colour:

Canary yellow to orange yellow

Fracture:

Irregular/Uneven, Conchoidal

Density:

4.22 g/cm3 (Measured) 4.26 g/cm3 (Calculated)

Optical Data of HolfertiteHide

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

RI values:

_n_ω = 1.815(8) _n_ε = 1.910(8)

δ = 0.095

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

Pleochroism:

Non-pleochroic

Chemistry of HolfertiteHide

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

Mindat Formula:

CaxU6+2-xTi(O8-xOH4x) · 3H2O

Crystallography of HolfertiteHide

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

Class (H-M):

3 - Pyramidal

Cell Parameters:

a = 10.824 Å, c = 7.549 Å

Unit Cell V:

765.94 ų (Calculated from Unit Cell)

Morphology:

Hollow elongated prisms.

Crystal StructureHide

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

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

Show
Big Balls |Small Balls |Just Balls |Spacefill
Polyhedra Off |Si Polyhedra |All Polyhedra
Remove metal-metal sticks

Display Options
Black Background |White Background
Perspective On |Perspective Off
2D |Stereo |Red-Blue |Red-Cyan

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)
0006067 Holfertite Sokolova E, Hawthorne F C, Belakovskiy D I, Pautov L A (2005) The OD (order-disorder) structure of holfertite, a hydrated uranyl titanate mineral from Searle Canyon, Thomas Range, Utah, USA The Canadian Mineralogist 43 1545-1552 2005 Searle Canyon, Thomas Range, Utah, USA 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
4.60 Å (100)
2.90 Å (80)
1.87 Å (30)
1.747 Å (30)
1.211 Å (30)

Comments:

From type description.

Geological EnvironmentHide

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

Type Occurrence of HolfertiteHide

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

General Appearance of Type Material:

Minute yellow, rod-like needles sparsely.

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (#91374).
National Museum of Natural History (Smithsonian Institution), Washongton, D.C., USA.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Synonyms of HolfertiteHide

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

Other Language Names for HolfertiteHide

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

Common AssociatesHide

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

Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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

4.GB.05 Agrinierite K2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2O Mon. m : B m
4.GB.05 Compreignacite K2(UO2)6O4(OH)6 · 7H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
4.GB.05 Rameauite K2Ca(UO2)6O6(OH)4 · 6H2O Mon. m : B b
4.GB.10 Becquerelite Ca(UO2)6O4(OH)6 · 8H2O Orth. m _m_2 : P n _a_21
4.GB.10 Billietite Ba(UO2)6O4(OH)6 · 4-8H2O Orth. m _m_2
4.GB.10 Protasite Ba(UO2)3O3(OH)2 · 3H2O Mon. m
4.GB.15 Richetite (Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24 · 41H2O Tric. 1 : _P_1
4.GB.20 Bauranoite Ba(UO2)2(OH)6 · 1-2H2O
4.GB.20 Calciouranoite (Ca,Ba,Pb)U2O7 · 5H2O
4.GB.20 Metacalciouranoite (Ca,Ba,Pb,K2)U2O7 · 2H2O
4.GB.25 Fourmarierite Pb(UO2)4O3(OH)4 · 4H2O Orth. m _m_2
4.GB.30 Wölsendorfite Pb7(UO2)14O19(OH)4 · 12H2O Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m
4.GB.35 Masuyite Pb(UO2)3O3(OH)2 · 3H2O Orth. m m m _(_2/_m_2/_m_2/m )
4.GB.40 Metavandendriesscheite PbU7O22 · nH2O n < 12 Orth.
4.GB.40 Vandendriesscheite PbU7O22 · 12H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
4.GB.45 Vandenbrandeite Cu(UO2)(OH)4 Tric. 1 : _P_1
4.GB.50 Sayrite Pb2(UO2)5O6(OH)2 · 4H2O Mon. 2/m
4.GB.55 Curite Pb3(H2O)2[(UO2)4O4(OH)3]2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a
4.GB.60 Iriginite (UO2)Mo2O7 · 3H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P b c m
4.GB.65 Uranosphaerite Bi(UO2)O2(OH) Mon. 2/m
4.GB.75 Carlosbarbosaite (UO2)2Nb2O6(OH)2 · 2H2O Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m
4.GB.80 Gauthierite KPb[(UO2)7O5(OH)7] · 8H2O Mon. 2/m : _P_21/b
4.GB.85 Kroupaite KPb0.5[(UO2)8O4(OH)10] · 10H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
4.GB.90 Leesite K(H2O)2[(UO2)4O2(OH)5] · 3H2O Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
4.GB.95 Shinkolobweite Pb1.25[U5+(H2O)2(U6+O2)5O8(OH)2](H2O)5 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
4.GB.95 Nollmotzite Mg[U5+(U6+O2)2O4F3] · 4H2O Mon. m : B m

Fluorescence of HolfertiteHide

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.

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

References for HolfertiteHide

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

Reference List:

Foord, Eugene E., Lichte, Frederick E., Chirnside, William, Esposito, Kenneth J., Davis, Andrew M. (1995) A New U-Ti-Ca-HREE Hydrated Oxide and Associated Niobian Rutile from Topaz Valley, Utah, in March - April 1995. The Mineralogical Record, 26 (2) 122-128

Sokolova, E., Hawthorne, F.C., Belakovskiy, D.I., Pautov, L.A. (2005) The OD (order–disorder) structure of holfertite, a hydrated uranyl titanate mineral from Searle Canyon, Thomas Range, Utah, USA. The Canadian Mineralogist: 43: 1545-1552.

Ercit, T.S., Piilonen, P.C., Locock, A.J., Kolitsch, U., Rowe, R. (2006) New mineral names. American Mineralogist, 91, 1201-1209.

Hawthorne, Frank C., Belakovskiy, D.I., Pautov, L.A., Sokolova, E., Mokhov, A.V. (2006) Holfertite: a new hydroxyl-hydrated uranium titanite from Starvation Canyon, Thomas Range, Utah. The Mineralogical Record, 37 (4) 311-317

Localities for HolfertiteHide

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.