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Santaclaraite

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About SantaclaraiteHide

Seal of Santa Clara county, California
Formula:
CaMn4[Si5O14OH](OH) · H2O
Colour:
Pink to reddish-orange, brown
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.31
Crystal System:
Triclinic
Name:
For the county of Santa Clara, California, where it was first located.
This page provides mineralogical data about Santaclaraite.


Classification of SantaclaraiteHide

Approved
Approval Year:
1979
9.DK.10

9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains
65.4.2.1

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
4 : Single-Width Unbranched Chains, W=1 with chains P=5
14.18.16

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe

Physical Properties of SantaclaraiteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Pink to reddish-orange, brown
Streak:
Very pale pink
Hardness:
6½ on Mohs scale
Cleavage:
Distinct/Good
{100} {010}
Density:
3.31 g/cm3 (Measured)    3.398 g/cm3 (Calculated)

Optical Data of SantaclaraiteHide

Type:
Biaxial (-)
RI values:
nα = 1.681 nβ = 1.696 nγ = 1.708
2V:
Measured: 83° , Calculated: 82°
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
Calculated
Pleochroism:
Weak
Comments:
X= very pale red
Y= pale red
Z= pale reddish brown

Chemical Properties of SantaclaraiteHide

Formula:
CaMn4[Si5O14OH](OH) · H2O
IMA Formula:
CaMn2+4Si5O14(OH)2 · H2O
Common Impurities:
Al,Fe,Ni,Co,Mg,Na

Crystallography of SantaclaraiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 9.73 Å, b = 9.97 Å, c = 7.6 Å
α = 109.77°, β = 93.95°, γ = 104.97°
Ratio:
a:b:c = 0.976 : 1 : 0.762
Unit Cell V:
660.28 ų (Calculated from Unit Cell)
Morphology:
Radiating lamellar aggregates.

Type Occurrence of SantaclaraiteHide

Place of Conservation of Type Material:
Smithsonian Institution
Geological Setting of Type Material:
Manganese mine

Synonyms of SantaclaraiteHide

Other Language Names for SantaclaraiteHide

Related Minerals - Nickel-Strunz GroupingHide

9.DK.05BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)Tric. 1 : P1
9.DK.05LithiomarsturiteLiCa2Mn2Si5O14(OH)Tric.
9.DK.05ManganbabingtoniteCa2(Mn,Fe)FeSi5O14(OH)Tric.
9.DK.05MarsturiteNaCaMn3Si5O14(OH)Tric. 1 : P1
9.DK.05NambuliteLiMn2+4Si5O14(OH)Tric.
9.DK.05Natronambulite(Na,Li)(Mn,Ca)4Si5O14OHTric.
9.DK.05RhodoniteMn2+SiO3Tric. 1
9.DK.05ScandiobabingtoniteCa2(Fe2+,Mn)ScSi5O14(OH)Tric.
9.DK.05Fowlerite(Mn2+,Zn,Ca)SiO3
9.DK.15SaneroiteNaMn2+5[Si5O14(OH)](VO3)(OH)Tric.
9.DK.20Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2Mon.
9.DK.20Tadzhikite-(Ce)Ca4Ce3+2Ti◻(B4Si4O22)(OH)2Mon.
9.DK.20Mottanaite-(Ce)Ca4(CeCa)AlBe2(Si4B4O22)O2Mon. 2/m
9.DK.20CiprianiiteCa4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2Mon.
9.DK.20Hellandite-(Ce)(Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.18.1NambuliteLiMn2+4Si5O14(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.
14.18.17FerrobustamiteCaFe2+(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.
14.18.23RuiziteCa2Mn3+2[Si4O11(OH)2](OH)2·2H2OMon. 2
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. 2/m : B2/m
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.

Fluorescence of SantaclaraiteHide

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 SantaclaraiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ohashi, Y., Erd, R.C. (1978) A new pyroxenoid Mn4CaSi5•2H2O: its structure and relationship to rhodonite, nambulite and marsturite. (abstract) Geological Society of America Abstract with Program: 10: 465.
Liebau, F. (1980) The role of cationic hydrogen in pyroxenoid crystal chemistry. American Mineralogist: 65: 981-985.
Ohashi, Y., Finger, L.W. (1981) The crystal structure of santaclaraite, CaMn4[Si5O14(OH)](OH)·H2O: the role of hydrogen atoms in the pyroxenoid structure. American Mineralogist: 66: 154-168.
Holdaway, M.J. (1981) Errata. American Mineralogist: 66: 1281-1281.
Erd, R.C., Ohashi, Y. (1984) Santaclaraite, a new calcium-manganese silicate from California. American Mineralogist: 69: 200-206.

Internet Links for SantaclaraiteHide

Localities for SantaclaraiteHide

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.
USA (TL)
 
  • California
    • Santa Clara Co.
      • Diablo Range
        • Black Wonder District
          • Sugarloaf Mountain
Erd, R.C. and Y. Ohashi (1981) Santaclaraite, a new manganese silicate from California, American Mineralogist: 66: 154-168; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 414; American Mineralogist (1984): 69: 200-206.; Pete J. Dunn, Donald R. Peacor, Richard C. Erd, and Robert A. Ramik (1986) Franciscanite and örebroite, two new minerals from California and Sweden, related to redefined welinite. American Mineralogist, 71:1522-1526.
    • Stanislaus Co.
      • Diablo Range
        • Ladd-Buckeye District
          • Mount Oso
Am Min 69:200-206
Mineral and/or Locality  
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