Benyacarite
A valid IMA mineral species
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About Benyacarite
Formula:
(H2O)2Mn2Ti2Fe3+(PO4)4(OF)(H2O)10 · 4H2O
Formerly given as (H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2·14H2O.
Change basis:
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Change basis:
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Colour:
Light greenish yellow to light brown
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
2.37 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named by Francesco Demartin, Hebe Dina Gay, Carlo Maria Gramaccioli, Tullio Pilatti in 1995 in honor of Maria Angelica Rodríguez de Benyacar (8 December 1928 -), Comision Nacional de Energia Atomica, Buenos Aires, Argentina, for her contribution to mineralogical studies.
A K-dominant end-member (probably new mineral) was reported by Sejkora et al. (2006).
Compare also paulkerrite and mantienneite.
Compare also paulkerrite and mantienneite.
Unique Identifiers
Mindat ID:
6823
Long-form identifier:
mindat:1:1:6823:5
GUID
(UUID V4):
(UUID V4):
ade49370-6dd9-43ce-8b69-a416983a18ca
IMA Classification of Benyacarite
Approved
First published:
1997
Approval history:
Formula redefinition:
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Classification of Benyacarite
8.DH.35
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
42.11.21.4
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
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 |
---|---|---|
Byc | 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 Benyacarite
Vitreous
Transparency:
Transparent
Colour:
Light greenish yellow to light brown
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Perfect
{010} perfect
{010} perfect
Fracture:
Irregular/Uneven
Density:
2.37 g/cm3 (Calculated)
Optical Data of Benyacarite
Type:
Biaxial (+)
RI values:
nα = 1.612(3) nβ = 1.621(3) nγ = 1.649(3)
2V:
Measured: 60° , Calculated: 60°
Birefringence:
0.037
Max Birefringence:
δ = 0.037
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:
Moderate
Dispersion:
none
Optical Extinction:
Parallel. XYZ = bca
Pleochroism:
Non-pleochroic
Chemistry of Benyacarite
Mindat Formula:
(H2O)2Mn2Ti2Fe3+(PO4)4(OF)(H2O)10 · 4H2O
Formerly given as (H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2·14H2O.
Change basis:
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Formerly given as (H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2·14H2O.
Change basis:
Grey, I.E., Bosi, F. (2023): Proposal 23-D
Crystallography of Benyacarite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbca
Setting:
Pbca
Cell Parameters:
a = 10.561(5) Å, b = 20.585(8) Å, c = 12.516(2) Å
Ratio:
a:b:c = 0.513 : 1 : 0.608
Unit Cell V:
2,720.96 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular to equidimensional. Forms {010}, {111}, {001}, and {100}.
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0011061 | Benyacarite | Demartin F, Pilati T, Gay H D, Gramaccioli C M (1993) The crystal structure of a mineral related to paulkerrite Zeitschrift fur Kristallographie 208 57-71 | 1993 | granitic pegmatites in Cerro Blanco, Tanti, Cordoba, Argentina | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.26 Å | (100) |
3.13 Å | (100) |
10.29 Å | (90) |
7.51 Å | (80) |
3.76 Å | (50) |
5.16 Å | (40) |
3.96 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47c : [Carbonates, phosphates, borates, nitrates] | |
47e : [Vanadates, chromates, manganates] |
Geological Setting:
Late stage phosphate mineralization in a granite pegmatite
Type Occurrence of Benyacarite
General Appearance of Type Material:
Small (0.2 -0.3 mm) nearly light greenish yellow to light brown crystals with {010}, {111}, {001}, and {100}.
Place of Conservation of Type Material:
Mineralogical Museum of the Department of Earth Sciences, University of Milano, Italy.
Geological Setting of Type Material:
Late stage phosphate mineralization in a granite pegmatite.
Associated Minerals at Type Locality:
Reference:
Demartin, F., Gay, H.D., Gramaccioli, C.M., and Pilati, T. (1997) Benyacarite, a new titanium-bearing phosphate mineral species from Cerro Blanco, Argentina. The Canadian Mineralogist: 35: 707–712.
Synonyms of Benyacarite
Other Language Names for Benyacarite
Varieties of Benyacarite
Matveevite | A Mg-Al-bearing benyacarite. |
Relationship of Benyacarite to other Species
Member of:
Other Members of this group:
Hochleitnerite | Mn2Ti3(PO4)4O2(H2O)2 · 14H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
Hydroxylbenyacarite | (H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10 · 4H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
Macraeite | K(H2O)Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10 · 4H2O | Mon. 2/m : P21/b |
Mantienneite | KMg2Al2Ti(PO4)4(OH)3 · 15H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
Paulkerrite | K(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2O | Mon. m |
Pleysteinite | [(H2O)0.5K0.5]2Mn2Al3(PO4)4F2 · 14H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
Rewitzerite | [K(H2O)]Mn2Al3(PO4)4(OH)2 · 14H2O | Mon. 2/m : P21/b |
Common Associates
Associated Minerals Based on Photo Data:
26 photos of Benyacarite associated with Phosphosiderite | FePO4 · 2H2O |
8 photos of Benyacarite associated with Strengite | FePO4 · 2H2O |
4 photos of Benyacarite associated with Rockbridgeite | Fe2+Fe3+4(PO4)3(OH)5 |
2 photos of Benyacarite associated with Paulkerrite | K(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2O |
2 photos of Benyacarite associated with Nsutite | (Mn4+,Mn2+)(O,OH)2 |
1 photo of Benyacarite associated with Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
1 photo of Benyacarite associated with Zwieselite | Fe2+2(PO4)F |
1 photo of Benyacarite associated with Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
Related Minerals - Strunz-mindat Grouping
8.DH. | Ferroberaunite | Fe2+Fe3+5(PO4)4(OH)5 · 6H2O |
8.DH. | Rowleyite | [Na(NH4,K)9Cl4][V5+,4+2(P,As)O8]6 · n[H2O,Na,NH4,K,Cl] |
8.DH. | Ammoniotinsleyite | (NH4)Al2(PO4)2(OH) · 2H2O |
8.DH. | Thebaite-(NH4) | (NH4)3Al(C2O4)(PO3OH)2(H2O) |
8.DH. | Dendoraite-(NH4) | (NH4)2NaAl(C2O4)(PO3OH)2(H2O)2 |
8.DH. | Whiteite-(MnMnMn) | Mn2+Mn2+Mn2+2Al2(PO4)4(OH)2 · 8H2O |
8.DH. | Whiteite-(CaMnFe) | CaMnFe2Al2(PO4)4(OH)2 · 8H2O |
8.DH. | Hochleitnerite | Mn2Ti3(PO4)4O2(H2O)2 · 14H2O |
8.DH. | Regerite | KFe6(PO4)4(OH)7(H2O)6 · 4H2O |
8.DH. | Hydroxylbenyacarite | (H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10 · 4H2O |
8.DH. | Macraeite | K(H2O)Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10 · 4H2O |
8.DH.05 | Minyulite | KAl2(PO4)2F · 4H2O |
8.DH.10 | Leucophosphite | KFe3+2(PO4)2(OH) · 2H2O |
8.DH.10 | Spheniscidite | (NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O |
8.DH.10 | Tinsleyite | KAl2(PO4)2(OH) · 2H2O |
8.DH.15 | Jahnsite-(CaMnFe) | {Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(CaMnMg) | {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(CaMnMn) | {Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Keckite | CaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2O |
8.DH.15 | Rittmannite | {(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(CaFeMg) | {Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(CaMnMg) | {Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(MnMnMn) | {Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Kaluginite | (Mn2+,Ca)MgFe3+(PO4)2(OH) · 4H2O |
8.DH.15 | Jahnsite-(CaFeFe) | {Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(NaFeMg) | NaFe3+Mg2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(NaMnMg) | {(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(CaMgMg) | {Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(CaMnMn) | {Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(MnMnMg) | MnMnMg2Al2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(MnMnMg) | Mn2+Mn2+Mg2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(CaFeMg) | CaFe2+Mg2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(MnMnFe) | Mn2+Mn2+Fe2+2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Whiteite-(CaMgMg) | CaMg3Al2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(MnMnZn) | Mn2+Mn2+Zn2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(NaMnMn) | NaMn2+(Mn2+Fe3+)Σ2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.15 | Jahnsite-(CaMnZn) | CaMn2+Zn2Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.20 | Lun'okite | (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH · 4H2O |
8.DH.20 | Manganosegelerite | (Mn2+,Ca)(Mn2+,Fe2+,Mg)Fe3+(PO4)2(OH) · 4H2O |
8.DH.20 | Overite | CaMgAl(PO4)2(OH) · 4H2O |
8.DH.20 | Segelerite | Ca2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O |
8.DH.20 | Wilhelmvierlingite | CaMnFe3+(PO4)2(OH) · 2H2O |
8.DH.20 | Juonniite | CaMgSc(PO4)2(OH) · 4H2O |
8.DH.25 | Calcioferrite | Ca2Fe3+2(PO4)3(OH) · 7H2O |
8.DH.25 | Kingsmountite | Ca3MnFeAl4(PO4)6(OH)4 · 12H2O |
8.DH.25 | Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
8.DH.25 | Zodacite | Ca4Mn2+Fe3+4(PO4)6(OH)4 · 12H2O |
8.DH.25 | Fanfaniite | Ca4MnAl4(PO4)6(OH)4 · 12H2O |
8.DH.30 | Arseniosiderite | Ca2Fe3+3(AsO4)3O2 · 3H2O |
8.DH.30 | Kolfanite | Ca2Fe3+3O2(AsO4)3 · 2H2O |
8.DH.30 | Mitridatite | Ca2Fe3+3(PO4)3O2 · 3H2O |
8.DH.30 | Pararobertsite | Ca2Mn3+3(PO4)3O2 · 3H2O |
8.DH.30 | Robertsite | Ca2Mn3+3(PO4)3O2 · 3H2O |
8.DH.30 | Sailaufite | (Ca,Na,◻)2Mn3+3(AsO4)2(CO3)O2 · 3H2O |
8.DH.35 | Mantienneite | KMg2Al2Ti(PO4)4(OH)3 · 15H2O |
8.DH.35 | Paulkerrite | K(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2O |
8.DH.40 | Xanthoxenite | Ca4Fe3+2(PO4)4(OH)2 · 3H2O |
8.DH.45 | Mahnertite | NaCu3(AsO4)2Cl · 5H2O |
8.DH.50 | Andyrobertsite | KCdCu5(AsO4)4(H2AsO4) · 2H2O |
8.DH.50 | Calcioandyrobertsite | KCaCu5(AsO4)4(H2AsO4) · 2H2O |
8.DH.55 | Englishite | K3Na2Ca10Al15(PO4)21(OH)7 · 26H2O |
8.DH.60 | Bouazzerite | Bi6(Mg,Co)11Fe3+14(AsO4)18(OH)4O12 · 86H2O |
8.DH.65 | Galliskiite | Ca4Al2(PO4)2F8 · 5H2O |
8.DH.70 | Joteite | Ca2CuAl(AsO4)[AsO3(OH)]2(OH)2 · 5H2O |
8.DH.75 | Kampelite | Ba6Mg3Sc8(PO4)12(OH)6 · 7H2O |
8.DH.80 | Kapundaite | NaCaFe4(PO4)4(OH)3 · 5H2O |
8.DH.85 | Vaniniite | Ca2Mn2+3Mn3+2O2(AsO4)4 · 2H2O |
Fluorescence of Benyacarite
Not fluorescent.
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.
Internet Links for Benyacarite
mindat.org URL:
https://www.mindat.org/min-6823.html
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References for Benyacarite
Localities for Benyacarite
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).
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.
All localities listed without proper references should be considered as questionable.
Argentina (TL) | |
| Demartin et al. (1993) +2 other references |
Czech Republic | |
| Sejkora et al. (2006) |
| Škoda +1 other reference |
Germany | |
| DILL et al. (2009) |
Anthony et al. (2000) +1 other reference | |
| Dill (2009) |
KECK et al. (1998) +1 other reference | |
Morocco | |
| Georges Favreau collection |
Portugal | |
| Pedro Alves collection +1 other reference |
| Christian Rewitzer collection / analysed |
Pedro Alves collection |
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Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany