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Orientite

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About OrientiteHide

Formula:
Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O
Hardness:
4 - 5
Crystal System:
Orthorhombic
Name:
Named in 1921 by Donnel Foster Hewett and Earl Vincent Shannon for the type locality, the Oriente Province in Cuba. In 1976, Oriente Province was split up into 6 provinces. The type locality is now located in Santiago de Cuba Province.
This page provides mineralogical data about Orientite.


Classification of OrientiteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.BJ.05

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
58.3.1.2

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
3 : Insular, Mixed, Single, and Larger Tetrahedral Groups with insular single and triple groups (n=1, 3)
14.18.22

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

Physical Properties of OrientiteHide

Hardness:
4 - 5 on Mohs scale

Optical Data of OrientiteHide

Type:
Biaxial (+)
RI values:
nα = 1.758 nβ = 1.776 nγ = 1.795
2V:
Measured: 68° to 83°, Calculated: 90°
Max Birefringence:
δ = 0.037
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
relatively strong

Chemical Properties of OrientiteHide

Formula:
Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O
IMA Formula:
Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O
Common Impurities:
Al,Fe,V,Cu,Mg,K,H2O,S

Crystallography of OrientiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 6.08 Å, b = 9.04 Å, c = 19.14 Å
Ratio:
a:b:c = 0.673 : 1 : 2.117
Unit Cell V:
1,052.00 ų (Calculated from Unit Cell)

Type Occurrence of OrientiteHide

Other Language Names for OrientiteHide

German:Orientit
Simplified Chinese:锰柱石
Spanish:Orientita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Macfallite6 photos of Orientite associated with Macfallite on mindat.org.
Braunite2 photos of Orientite associated with Braunite on mindat.org.
Groutite1 photo of Orientite associated with Groutite on mindat.org.
Hydroxyapophyllite-(K)1 photo of Orientite associated with Hydroxyapophyllite-(K) on mindat.org.
Quartz1 photo of Orientite associated with Quartz on mindat.org.
Pectolite1 photo of Orientite associated with Pectolite on mindat.org.
Calcite1 photo of Orientite associated with Calcite on mindat.org.
Tangeite1 photo of Orientite associated with Tangeite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

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.35RuiziteCa2Mn3+2[Si4O11(OH)2](OH)2·2H2OMon. 2
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. mmm (2/m 2/m 2/m)
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 - Dana Grouping (8th Ed.)Hide

58.3.1.1Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 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.
14.18.16SantaclaraiteCaMn4[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
14.18.23RuiziteCa2Mn3+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.

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 OrientiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hewett, D.F. and E.V. Shannon (1921) Orientite, a new hydrous silicate of manganese and calcium from Cuba. American Journal of Science: 1: 491-506.
Sclar, C.B. (1961) Optical crystallography of orientite from Oriente Province, Cuba. American Mineralogist: 46: 226-232.
Moore, P.B., Ito, J., and Steele, I.M. (1979) Macfallite and orientite: calcium manganese (III) silicates from upper Michigan. Mineralogical Magazine: 43: 325-331.
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.
Mellini M., Merlino S., Pasero M. (1986): X-ray and HRTEM structure analysis of orientite. American Mineralogist: 71: 176-187.
Neues Jahrbuch für Mineralogie, Monatshefte (1989): 455.

Internet Links for OrientiteHide

Localities for OrientiteHide

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.
China
 
  • Fujian
    • Longyan
      • Liancheng Co.
        • Liancheng Mn deposit
Nanlai Zheng, Xingli Mao, and Jiansheng Ding (1986): Geology and Prospecting 22(3), 17-20
Cuba (TL)
 
  • Santiago de Cuba Province
AM 70 (1985), 171; HB2/2 (1995)
      • Bueycito
Van King
Italy
 
  • Liguria
    • La Spezia Province
      • Vara Valley
        • Borghetto Vara
Palenzona A. (1990) Orientite e MacFallite di Cerchiara (La Spezia). Rivista Mineralogica Italiana: 2: 111-114.; Jambor, J.L. and Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.
Japan
 
  • Hokkaidō
    • Okhotsk Subprefecture (Abashiri Province)
      • Tokoro-gun
Miyajima, N., Osawa, S., Miura, H., Kikuchi, T. and Hiriya, Yu (1994) Proceedings of the 9th Quadrennial International Association on the Genesis of Ore Deposits (IAGOD) Symposium (Beijing), 603-616.
Serbia
 
  • Zaječar District
    • Bor area
Pačevski, A., Cvetković, V., Šarić, K.,Banješević, M., Hoefer, H.E., Kremenović, A. (2016): Manganese mineralization in andesites of Brestovačka Banja, Serbia: evidence of sea-floor exhalations in the Timok Magmatic Complex. Mineralogy and Petrology: 110: 491-502; http://forum.amiminerals.it/viewtopic.php?f=5&t=12922&sid=9b89d03bd5ce87f39ba8564967753056 (2016)
South Africa
 
  • Northern Cape
    • Kalahari manganese field
      • Hotazel
Minerals of South Africa
USA
 
  • Michigan
    • Keweenaw Co.
      • Copper Harbor
Rocks & min.: 58:111.
  • New York
    • Lewis Co.
      • Diana Township
Michael Hawkins, New York State Museum
Mineral and/or Locality  
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