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Ruizite

This page kindly sponsored by Chris Whitney-Smith
Joe Ruiz and Dick Thomssen
Formula:
Ca2Mn3+2[Si4O11(OH)2](OH)2·2H2O
formerly reported as Ca2Mn3+2[(OH)2|H2Si4O13].2H2O
Colour:
orange, red-brown
Hardness:
5
Specific Gravity:
2.9
Crystal System:
Monoclinic
Member of:
Name:
Named after Mr. Joe Ana Ruiz (1924-2017), Pharmacist, Justice of the Peace, mineralogist and mineral collector of Mammoth, Arizona.
Isostructural with:
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.


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Classification of RuiziteHide

Approved
Approval Year:
1977
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

Physical Properties of RuiziteHide

Transparency:
Translucent
Colour:
orange, red-brown
Streak:
apricot yellow
Hardness:
Density:
2.9(1) g/cm3 (Measured)    2.997 g/cm3 (Calculated)

Optical Data of RuiziteHide

Type:
Biaxial (-)
RI values:
nα = 1.663 nβ = 1.715 nγ = 1.734
2V:
Measured: 60° , Calculated: 60°
Max Birefringence:
δ = 0.071
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
strong r > v

Chemical Properties of RuiziteHide

Formula:
Ca2Mn3+2[Si4O11(OH)2](OH)2·2H2O

formerly reported as Ca2Mn3+2[(OH)2|H2Si4O13].2H2O
IMA Formula:
Ca2Mn3+2Si4O11(OH)4 · 2H2O

Crystallography of RuiziteHide

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
Unit Cell V:
666.41 ų
Z:
2
Morphology:
Euhedral prismatic crystals to 1mm, spherules of radial acicular crystals.
Twinning:
Common on {100}
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)

Type Occurrence of RuiziteHide

Place of Conservation of Type Material:
Smithsonian 136689
Geological Setting of Type Material:
Cooling of a high temperature calc-silicate rock under oxidizing conditions.

Synonyms of RuiziteHide

Other Language Names for RuiziteHide

German:Ruizit
Russian:Руицит
Spanish:Ruizita

Relationship of Ruizite to other SpeciesHide

Member of:
Other Members of this group:
StrontioruiziteSr2Mn3+2Si4O11(OH)4 · 2H2O
Taniajacoite SrCaMn3+2Si4O11(OH)4·2H2OTric.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hydroxyapophyllite-(K)14 photos of Ruizite associated with Hydroxyapophyllite-(K) on mindat.org.
Kinoite11 photos of Ruizite associated with Kinoite on mindat.org.
Fluorapophyllite-(K)7 photos of Ruizite associated with Fluorapophyllite-(K) on mindat.org.
Quartz5 photos of Ruizite associated with Quartz on mindat.org.
Gilalite4 photos of Ruizite associated with Gilalite on mindat.org.
Clinoenstatite4 photos of Ruizite associated with Clinoenstatite on mindat.org.
Sugilite4 photos of Ruizite associated with Sugilite on mindat.org.
Calcite3 photos of Ruizite associated with Calcite on mindat.org.
Apachite3 photos of Ruizite associated with Apachite on mindat.org.
Norrishite2 photos of Ruizite associated with Norrishite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.BJ.05OrientiteCa8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O Orth.
9.BJ.10RosenhahniteHCa3[Si3O9(OH)]Tric.
9.BJ.15TrabzoniteCa4(Si3O9)(OH)2Orth. mm2 : Ama2
9.BJ.20Thalénite-(Y)Y3Si3O10FMon.
9.BJ.25TiragalloiteMn2+4As5+Si3O12(OH)Mon. 2/m
9.BJ.30MedaiteMn2+6V5+Si5O18(OH)Mon.
9.BJ.40Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 2/m)
9.BJ.40Ardennite-(V)Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 2/m) : Pmmn
9.BJ.45KilchoaniteCa6(SiO4)(Si3O10)Orth.
9.BJ.50KornerupineMg3Al6(Si,Al,B)5O21(OH)Orth.
9.BJ.50Prismatine(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22Orth.
9.BJ.55ZunyiteAl13Si5O20(OH,F)18ClIso. 4 3m : F4 3m
9.BJ.60HubeiteCa2Mn2+Fe3+[HSi4O13] · 2H2OTric.
9.BJ.65Cassagnaite(Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8Orth. mmm (2/m 2/m 2/m) : Cmcm

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.18.1Nambulite(Li,Na)Mn4Si5O14(OH)Tric.
14.18.2Natronambulite(Na,Li)(Mn,Ca)4Si5O14OHTric.
14.18.3ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig.
14.18.4NorrishiteKLiMn3+2(Si4O10)O2Mon. 2/m : B2/m
14.18.5Shafranovskite(Na,K)6(Mn,Fe)3Si9O24 · 6H2OTrig.
14.18.6AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
14.18.7Donpeacorite(Mn2+,Mg)Mg[SiO3]2Orth.
14.18.8KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
14.18.9CaryopiliteMn2+3Si2O5(OH)4Mon.
14.18.10Gonyerite(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8
14.18.11Tirodite
14.18.12Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2Orth.
14.18.13BustamiteCaMn2+(Si2O6)Tric. 1 : P1
14.18.14GlaucochroiteCaMn2+SiO4Orth.
14.18.15Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
14.18.16SantaclaraiteCaMn4[Si5O14OH](OH) · H2OTric.
14.18.17FerrobustamiteCaFe2+(Si2O6)Tric.
14.18.18JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
14.18.19NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
14.18.20OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
14.18.21InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2OTric. 1 : P1
14.18.22OrientiteCa8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O Orth.
14.18.24BostwickiteCaMn6Si3O16 · 7H2OOrth.
14.18.25KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
14.18.26LithiomarsturiteLiCa2Mn2Si5O14(OH)Tric.
14.18.27SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
14.18.28KvanefjelditeNa4(Ca,Mn)(Si3O7)2(OH)2Orth.
14.18.29MarsturiteNaCaMn3Si5O14(OH)Tric. 1 : P1
14.18.30RaiteNa4Mn2+3Ti0.25Si8O20(OH)2 · 10H2OOrth. 2 2 2 : C2 2 2
14.18.31Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2Mon.
14.18.32Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O
14.18.33Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5Mon.
14.18.34Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
14.18.35PyroxmangiteMnSiO3Tric. 1
14.18.36Dannemorite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2
14.18.37Neotocite(Mn,Fe,Mg)SiO3 · H2OAmor.
14.18.38BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)Tric. 1 : P1
14.18.39ManganbabingtoniteCa2(Mn,Fe)FeSi5O14(OH)Tric.
14.18.40ÖrebroiteMn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3Hex.

Other InformationHide

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 RuiziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1978): 63: 794-795.
Moore, P.B., J. Shen, and T. Araki (1985) Crystal chemistry of the 2∞[M 3+ 2ф2(TO4)2] sheet: structural principles and crystal structures of ruizite, macfallite and orientite. American Mineralogist (1985): 70: 171-181.
Tschermaks Mineralogische und Petrographische Mitteilungen: 33: 135-146.
Fendrich, K.V., Downs, R.T., Origlieri, M.J. (2016): Redetermination of ruizite, Ca2Mn3+2[Si4O11(OH)2](OH)2·2H2O. Acta Crystallographica: E72: 959-963; http://forum.amiminerals.it/viewtopic.php?f=5&t=12870 (2016)

Internet Links for RuiziteHide

Localities for RuiziteHide

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 locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy
 
  • Liguria
    • La Spezia Province
      • Vara Valley
        • Borghetto Vara
Balestra, C., Kolitsch, U., Blass, G., Callegari, A.M., Boiocchi, M., Armellino, G., Ciriotti, M.E., Ambrino, P. Bracco, R. (2009): Mineralogia ligure 2007-2008: novità caratterizzate dal Servizio UK dell’AMI. Micro, 1-2009, 78-99.
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302;
      • Kuruman
        • N'Chwaning Mines
Y.Okazaki collection
Minerals of South Africa
USA (TL)
 
  • Arizona
    • Gila Co.
      • Dripping Spring Mts
        • Banner District
          • Christmas area
            • Christmas
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 231, 358. ; Bob Meyer (2012) Micro Mineral Collector. Friends of Mineralogy National Newsletter 42:10-13
  • Pennsylvania
    • Lebanon Co.
      • Cornwall Borough (Cornwall)
Kearns, L.E. & Kearns, C.A. (2008) Mineral News, 24, #1, 8-9.
Mineral and/or Locality  
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