Rooseveltite
A valid IMA mineral species - grandfathered
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About Rooseveltite
Franklin Delano Roosevelt
Formula:
Bi(AsO4)
Colour:
White to pale gray, pale green, yellow
Lustre:
Adamantine
Hardness:
4 - 4½
Specific Gravity:
6.86 - 7.01
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Franklin Delano Roosevelt (30 January 1882, Hyde Park, New York, USA - 12 April 1945, Warm Springs, Georgia, USA), 32nd President of the United States of America.
Dimorph of:
This page provides mineralogical data about Rooseveltite.
Unique Identifiers
Mindat ID:
3444
Long-form identifier:
mindat:1:1:3444:5
GUID
(UUID V4):
(UUID V4):
e732ace4-30e7-4e04-b9fa-cb903b59a285
IMA Classification of Rooseveltite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1946
Type description reference:
Classification of Rooseveltite
8.AD.50
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
38.4.4.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
20.6.1
20 : Arsenates (also arsenates with phosphate, but without other anions)
6 : Arsenates of Bi
20 : Arsenates (also arsenates with phosphate, but without other anions)
6 : Arsenates of Bi
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Roo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Rooseveltite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Rooseveltite
Adamantine
Transparency:
Transparent
Colour:
White to pale gray, pale green, yellow
Hardness:
4 - 4½ on Mohs scale
Hardness:
VHN25=513 kg/mm2 - Vickers
Tenacity:
Brittle
Fracture:
Irregular/Uneven, Conchoidal
Density:
6.86 - 7.01 g/cm3 (Measured) 7.21 g/cm3 (Calculated)
Optical Data of Rooseveltite
Type:
Biaxial (+)
RI values:
nα = 2.090 nβ = 2.150 nγ = 2.270
2V:
Measured: 50° , Calculated: 62°
Max Birefringence:
δ = 0.180
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Anisotropism:
Very high indices of refraction.
Dispersion:
extreme
Chemistry of Rooseveltite
Mindat Formula:
Bi(AsO4)
Elements listed:
Crystallography of Rooseveltite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.879(1) Å, b = 7.159(1) Å, c = 6.732(1) Å
β = 104.83°
β = 104.83°
Ratio:
a:b:c = 0.961 : 1 : 0.94
Unit Cell V:
320.49 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Botryoidal crusts.
Comment:
On synthetic material
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0009764 | Rooseveltite | Bedlivy D, Mereiter K (1982) Structure of alpha-BiAsO4 (rooseveltite) Acta Crystallographica B38 1559-1561 |  | 1982 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.15 Å | (100) |
| 2.97 Å | (80) |
| 3.33 Å | (61) |
| 2.98 Å | (37) |
| 4.82 Å | (36) |
| 2.70 Å | (36) |
| 2.50 Å | (26) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Rooseveltite
General Appearance of Type Material:
Crystalline crust on wood tin veinlets.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, 101938.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 115317.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 115317.
Geological Setting of Type Material:
Veinlets in rhyolitic and dacitic lava flows.
Associated Minerals at Type Locality:
Reference:
Herzenberg, R. (1946) Rooseveltita. in Nuevos Minerales de Bolivia: 10-11.
Other Language Names for Rooseveltite
Relationship of Rooseveltite to other Species
Member of:
Other Members of this group:
| Cheralite | CaTh(PO4)2 | Mon. 2/m |
| Gasparite-(Ce) | Ce(AsO4) | Mon. 2/m |
| Gasparite-(La) | La(AsO4) | Mon. 2/m |
| Huttonite | ThSiO4 | Mon. 2/m |
| Monazite | REE(PO4) | |
| Monazite-(Gd) | Gd(PO4) | Mon. |
| Unnamed (Nd-dominant Gasparite) | NdAsO4 | Mon. 2/m |
Common Associates
Associated Minerals Based on Photo Data:
| 7 photos of Rooseveltite associated with Beudantite | PbFe3(AsO4)(SO4)(OH)6 |
| 6 photos of Rooseveltite associated with Carminite | PbFe3+2(AsO4)2(OH)2 |
| 4 photos of Rooseveltite associated with Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
| 3 photos of Rooseveltite associated with Zaïrite | BiFe3+3(PO4)2(OH)6 |
| 3 photos of Rooseveltite associated with Fluorite | CaF2 |
| 2 photos of Rooseveltite associated with Bismoclite | BiOCl |
| 1 photo of Rooseveltite associated with Sellaite | MgF2 |
| 1 photo of Rooseveltite associated with Marcasite | FeS2 |
| 1 photo of Rooseveltite associated with Atelestite | Bi2(AsO4)O(OH) |
| 1 photo of Rooseveltite associated with Lillianite | Pb3-2xAgxBi2+xS6 |
Related Minerals - Strunz-mindat Grouping
| 8.AD. | Keplerite | Ca9(Ca0.5◻0.5)Mg(PO4)7 |
| 8.AD. | Deynekoite | Ca9◻Fe3+(PO4)7 |
| 8.AD. | Mazorite | Ba3(PO4)2 |
| 8.AD. | Monazite-(Gd) | Gd(PO4) |
| 8.AD.05 | Nahpoite | Na2(PO3OH) |
| 8.AD.10 | Monetite | Ca(PO3OH) |
| 8.AD.10 | Weilite | Ca(HAsO4) |
| 8.AD.10 | Švenekite | Ca(H2AsO4)2 |
| 8.AD.15 | Archerite | (K,NH4)(H2PO4) |
| 8.AD.15 | Biphosphammite | NH4(H2PO4) |
| 8.AD.20 | Phosphammite | (NH4)2(PO3OH) |
| 8.AD.25 | Buchwaldite | NaCa(PO4) |
| 8.AD.30 | Schultenite | Pb(HAsO4) |
| 8.AD.35 | Chernovite-(Y) | Y(AsO4) |
| 8.AD.35 | Dreyerite | Bi(VO4) |
| 8.AD.35 | Wakefieldite-(Ce) | Ce(VO4) |
| 8.AD.35 | Wakefieldite-(Y) | Y(VO4) |
| 8.AD.35 | Xenotime-(Y) | Y(PO4) |
| 8.AD.35 | Chernovite-(Ce) | (Ce,Y)(AsO4) |
| 8.AD.35 | Pretulite | Sc(PO4) |
| 8.AD.35 | Xenotime-(Yb) | Yb(PO4) |
| 8.AD.35 | Wakefieldite-(La) | La(VO4) |
| 8.AD.35 | Wakefieldite-(Nd) | Nd(VO4) |
| 8.AD.35 | Xenotime-(Gd) | Gd(PO4) |
| 8.AD.40 | Pucherite | Bi(VO4) |
| 8.AD.45 | Ximengite | Bi(PO4) |
| 8.AD.50 | Gasparite-(Ce) | Ce(AsO4) |
| 8.AD.50 | Monazite-(Ce) | Ce(PO4) |
| 8.AD.50 | Monazite-(La) | La(PO4) |
| 8.AD.50 | Monazite-(Nd) | Nd(PO4) |
| 8.AD.50 | Cheralite | CaTh(PO4)2 |
| 8.AD.50 | Monazite-(Sm) | Sm(PO4) |
| 8.AD.50 | UM2005-35-VO:CaFePSiTh | (Th,Ca)(VO4,SiO4,PO4) |
| 8.AD.50 | Gasparite-(La) | La(AsO4) |
| 8.AD.55 | Tetrarooseveltite | Bi(AsO4) |
| 8.AD.60 | Chursinite | [Hg2]2+Hg2+2[AsO4]2 |
| 8.AD.65 | Clinobisvanite | Bi(VO4) |
| 8.AD.70 | Gurimite | Ba3(VO4)2 |
| 8.AD.75 | Picaite | NaCa[AsO3OH][AsO2(OH)2] |
Other Information
Notes:
Soluble in acids.
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 Rooseveltite
mindat.org URL:
https://www.mindat.org/min-3444.html
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References for Rooseveltite
Reference List:
Localities for Rooseveltite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Lapis 8 (4) |
| American Mineralogist (1982) +2 other references | |
Australia | |
| Rankin et al. (2002) |
Bolivia (TL) | |
| Palache et al. (1951) |
| Joy Desor analyses by Raman and SEM-EDS. |
Czech Republic | |
| Jan Hloušek |
| Sejkora et al. (2006) |
| Šrein |
| Sejkora et al. (2019) |
| Sejkora (1994) |
France | |
| Queneau (n.d.) |
| Harlaux et al. (2015, August) |
| Lheur (2023) |
Germany | |
| Walenta (1992) |
| Walenta (1992) |
| |
| |
| Walenta (1992) | |
| |
| Walenta (1992) |
| [European Journal of Mineralogy ... +1 other reference |
| Lapis 30 (7/8) |
Greece | |
| Solomos et al. (2004) |
| Rieck et al. (2018) | |
Iran | |
| Nezafatis (2006) |
| Nezafatis (2006) | |
| Nezafatis (2006) | |
Italy | |
| Gentile et al. (2023) |
| Caboni et al. (2018) |
| Sabelli (2000) | |
Malaysia | |
| Kiong et al. (2004) |
Portugal | |
| Antunes et al. (2010) |
| Pedro Alves collection. +1 other reference |
| Leal Gomes | |
| Cepedal et al. (2013) |
| Pedro Alves collection and analytical ... |
| Alves (2017) |
Russia | |
| Kurguzova et al. (2014) |
| Alekseev et al. (2015) |
| E. Kaigorodova analytical data |
| Sidorov +5 other references |
| Tolstykh et al. (2017) +1 other reference | |
| Krinov D.I. et al. (2011) |
| Eremin et al. (2023) |
Spain | |
| MineralUp (Revista de Minerales) +1 other reference |
| Rewitzer et al. (2018) |
| Schnorrer (2000) |
| Calvo (2015) |
UK | |
| Rumsey (2007) |
USA | |
| Kampf et al. (2018) |
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