Ruizite (original) (raw)
A valid IMA mineral species
About RuiziteHide
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Formula:
Ca2Mn3+2[Si4O11(OH)2](OH)2 · 2H2O
formerly reported as Ca2Mn3+2[(OH)2|H2Si4O13].2H2O
Crystal System:
Monoclinic
Name:
Named after Mr. Joe Ana Ruiz (1924-2017), Pharmacist, Justice of the Peace, mineralogist and mineral collector of Mammoth, Arizona. Life Member Mineralogical Society of Arizona.
The Ca-analogue of strontioruizite.
The structure (basing on recent refinement by Fendrich et al., 2016) is based on [010] chains consisting of edge-sharing MnO6 octahedra; the octahedra are surrounded by finite [Si4O11(OH)2] chains. Calcium atoms, [7]Ca, are located in cavities formed by the above atom groupings.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3476:6
bfef60a3-0fc5-4ad5-ba17-a24991606892
IMA Classification of RuiziteHide
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IMA Formula:
Ca2Mn3+2Si4O11(OH)4 · 2H2O
Type description reference:
Classification of RuiziteHide
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9.BJ.35
9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
57.2.2.1
57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
2 : Insular Si3O10 and Larger Noncyclic Groups with [Si4O13] groups
14.18.23
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
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 |
|---|---|---|
| Rz | 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 RuiziteHide
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Density:
2.9(1) g/cm3 (Measured) 2.997 g/cm3 (Calculated)
Optical Data of RuiziteHide
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RI values:
_n_α = 1.663 _n_β = 1.715 _n_γ = 1.734
2V:
Measured: 60.2° , Calculated: 60.7°
δ = 0.071
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
X = b; Z ∧ c = 44°.
Comments:
Absorption: Y > Z >> X.
Chemistry of RuiziteHide
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Mindat Formula:
Ca2Mn3+2[Si4O11(OH)2](OH)2 · 2H2O
formerly reported as Ca2Mn3+2[(OH)2|H2Si4O13].2H2O
Crystallography of RuiziteHide
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Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Cell Parameters:
a = 9.0360(3) Å, b = 6.1682(2) Å, c = 11.9601(4) Å
β = 91.433(2)°
Ratio:
a:b:c = 1.465 : 1 : 1.939
Morphology:
Euhedral prismatic crystals to 1mm, spherules of radial acicular crystals. Forms include a{100}, q{102}, s{10_2}, p{111}, and d{011}.
Comment:
Space group: A2; Fendrich et al. (2016) have shown that the first-study space group (A2) is more likely than the further reported one (C2/m)
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000967 | Ruizite | Moore P B, Shen J, Araki T (1985) Crystal chemistry of the (M2)3+ phi2 sheet: Structural principles and crystal structures of ruizite, macfallite and orientite American Mineralogist 70 171-181 |  |
1985 | Nchwaning mine, Kalahari manganese field, South Africa | 0 | 293 |
| 0020603 | Ruizite | Fendrich K V, Downs R T, Origlieri M J (2016) Redetermination of ruizite, Ca2Mn3+2[Si4O11(OH)](OH)2*2H2O Acta Crystallographica E72 959-963 |  |
2016 | Wessels mine, Northern Cape Province, South Africa | 0 | 293 |
| 0019985 | Ruizite | Hawthorne F C (1984) The crystal structure of ruizite, a sorosilicate with an (Si4PHI13) cluster Tschermaks Mineralogische und Petrographische Mitteilungen 33 135-146 | 1984 | Wessels mine, Kalahari manganese fields, South Africa | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.951 Å | (100) |
| 4.190 Å | (70) |
| 3.116 Å | (60) |
| 5.092 Å | (50) |
| 3.644 Å | (40) |
| 2.951 Å | (40) |
| 2.591 Å | (40) |
Comments:
Christmas Mine, Arizona, USA. Data from the type description.
Geological EnvironmentHide
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Type Occurrence of RuiziteHide
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General Appearance of Type Material:
Spherules of radially arranged acicular crystals, rarely as scattered and isolated euhedra, in veinlets and on fracture surfaces in meta-limestones.
Place of Conservation of Type Material:
University of Arizona, Tucson, Arizona, USA.
Harvard University, Cambridge, Massachusetts, USA, 119096.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 136689.
The Natural History Museum, London, England, 1980,534.
Geological Setting of Type Material:
Cooling of a high temperature calc-silicate rock under oxidizing conditions.
Associated Minerals at Type Locality:
Reference:
Williams, S.A., Duggan, M. (1977) Ruizite, a new silicate mineral from Christmas, Arizona. Mineralogical Magazine: 41: 429-432.
Synonyms of RuiziteHide
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Other Language Names for RuiziteHide
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Relationship of Ruizite 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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| 9.BJ. | Arsenmedaite | Mn2+6 As5+Si5O18(OH) | Mon. 2/m |
|---|---|---|---|
| 9.BJ.05 | Orientite | Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.10 | Rosenhahnite | HCa3[Si3O9(OH)] | Tric. 1 : _P_1 |
| 9.BJ.15 | Trabzonite | Ca4(Si3O9)(OH)2 | Orth. m _m_2 : A m _a_2 |
| 9.BJ.20 | Thalénite-(Y) | Y3Si3O10F | Mon. |
| 9.BJ.25 | Tiragalloite | Mn2+4As5+Si3O12(OH) | Mon. 2/m |
| 9.BJ.30 | Medaite | Mn2+6V5+Si5O18(OH) | Mon. 2/m |
| 9.BJ.35 | Taniajacoite | SrCaMn3+2Si4O11(OH)4 · 2H2O | Tric. 1 |
| 9.BJ.35 | Strontioruizite | Sr2Mn3+2Si4O11(OH)4 · 2H2O | Mon. 2 : _B_2 |
| 9.BJ.40 | Ardennite-(As) | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.40 | Ardennite-(V) | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.40 | Kannanite | Ca4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.40 | Alpeite | Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.45 | Kilchoanite | Ca6(SiO4)(Si3O10) | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.50 | Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.50 | Prismatine | (◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22 | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.55 | Zunyite | Al13Si5O20(OH,F)18Cl | Iso. 43_m_ : F_43_m |
| 9.BJ.60 | Hubeite | Ca2Mn2+Fe3+Si4O12(OH) · 2H2O | Tric. 1 : _P_1 |
| 9.BJ.65 | Cassagnaite | (Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8 | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.70 | Pavlovskyite | Ca8(SiO4)2(Si3O10) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
Other InformationHide
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Notes:
Negligible reaction to 1:1 HCl, 1:1 HNO3, and 40% KOH when the reagents are cold, but readily dissolves in all three when heated.
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 RuiziteHide
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References for RuiziteHide
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Reference List:
Dunn, Pete J., Gobel, Volker, Grice, Joel D., Puziewicz, Jacek, Shigley, James E., Vanko, David A., Zilczer, Janet (1985) New mineral names. American Mineralogist, 70 (3-4) 436-441
Localities for RuiziteHide
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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.
| Italy | |
|---|---|
| Liguria La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine | Balestra et al. (2009) |
| Romania | |
| Maramureș County ⓘ Cavnic | Hîrtopanu P. et al. (2022) |
| South Africa | |
| Northern Cape John Taolo Gaetsewe District Municipality Joe Morolong Local Municipality N'Chwaning Mines ⓘ N'Chwaning I Mine | Y. Okazaki collection |
| ⓘ N'Chwaning II Mine | Cairncross et al. (1995) |
| ⓘ Wessels Mine | Pohl et al. (1991) |
| USA (TL) | |
| Arizona Gila County Banner Mining District Christmas ⓘ Christmas Mine (TL) |
Williams et al. (1977) +2 other references |
| Pennsylvania Lebanon County Cornwall Borough (Cornwall) ⓘ Cornwall Mines (Cornwall Iron Mine) | Kearns et al. (2008) |