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Garrelsite

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Robert M. Garrels
Formula:
NaBa3B7Si2O16(OH)4
System:
Monoclinic
Colour:
colourless
Lustre:
Vitreous
Hardness:
6
Name:
Named by C. Milton, J.M. Axelrod, and F.S. Grimaldi in 1955 in honor of Robert Minard Garrels (24 August 1916, Detroit, Michigan, USA – 8 March 1988, St. Petersburg, Florida, USA), geochemist. He was Chief, Solid State Group, Geochemistry and Petrology Branch, U. S. Geological Survey, when the mineral was discovered. He also was a professor at several institutions including Northwestern, Harvard, and U. Hawaii. His work on aqueous geochemistry was revolutionary. He was the recipient of several awards including the Penrose, Wollaston, and Roebling Medals.
Minute dipyramidal crystals.


Classification of Garrelsite

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1955
9.AJ.15

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
54.2.4.1

54 : NESOSILICATES Borosilicates and Some Beryllosilicates
2 : Borosilicates and Some Beryllosilicates with B in [4] coordination
17.5.31

17 : Silicates Containing other Anions
5 : Borosilicates

Physical Properties of Garrelsite

Vitreous
Colour:
colourless
Hardness (Mohs):
6

Chemical Properties of Garrelsite

IMA Formula:
NaBa3B7Si2O16(OH)4
Elements listed in formula:
Common Impurities:
Mg,Ca

Crystallography of Garrelsite

Crystal System:
Monoclinic
Cell Parameters:
a = 14.65 Å, b = 8.48 Å, c = 13.46 Å
β = 114.3°
Ratio:
a:b:c = 1.728 : 1 : 1.587
Unit Cell Volume:
V 1,524.01 ų (Calculated from Unit Cell)
Z:
4

Type Occurrence of Garrelsite

Relationship of Garrelsite to other Species

9.AJ.05GrandidieriteMgAl3O2(BO3)SiO4
9.AJ.05OmineliteFe2+Al3O2(BO3)SiO4
9.AJ.10DumortieriteAlAl6BSi3O18
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18
9.AJ.10MagnesiodumortieriteMgAl6BSi3O17(OH)
9.AJ.20BakeriteCa4(H5B5Si3O20)
9.AJ.20DatoliteCaB(SiO4)(OH)
9.AJ.20Gadolinite-(Ce)Fe2+Be2Ce2(SiO4)2O2
9.AJ.20Gadolinite-(Y)Fe2+Be2Y2(SiO4)2O2
9.AJ.20Hingganite-(Ce)BeCe(SiO4)(OH)
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2
9.AJ.20Hingganite-(Yb)BeYb(SiO4)(OH)
9.AJ.20HomiliteCa2Fe2+B2(SiO4)2O2
9.AJ.20Melanocerite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AJ.20Minasgeraisite-(Y)CaBe2Y2(SiO4)2O2
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2
9.AJ.25Stillwellite-(Ce)CeBSiO5
9.AJ.30Cappelenite-(Y)BaY6B6Si3O24F2
9.AJ.35Okanoganite-(Y)(Y,REE,Ca,Na,Th)16(Fe3+,Ti)(Si,B,P)10(O,OH)38F10
9.AJ.35Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)Cax(As3+)1-x(Si,As5+)Si6B3(O,F)48
9.AJ.35Proshchenkoite-(Y)(Y,REE,Ca,Na,Mn)15CaFe2+(P,Si)Si6B3O34F14
9.AJ.40JadariteLiNaB3SiO7(OH)
17.5.1ManandoniteLi2Al4(Si2AlB)O10(OH)8
17.5.2ReedmergneriteNaBSi3O8
17.5.3SearlesiteNaBSi2O5(OH)2
17.5.4OleniteNaAl3Al6(Si6O18)(BO3)3(O3)OH
17.5.5ElbaiteNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3OH
17.5.6KalborsiteK6Al4BSi6O20(OH)4Cl
17.5.7BoromuscoviteKAl2(Si3B)O10(OH)2
17.5.8PoudretteiteKNa2(B3Si12)O30
17.5.9LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
17.5.10DatoliteCaB(SiO4)(OH)
17.5.11DanburiteCaB2Si2O8
17.5.12HowliteCa2B5SiO9(OH)5
17.5.13BakeriteCa4(H5B5Si3O20)
17.5.14OyeliteCa10B2Si8O29 · 12H2O
17.5.15Kornerupine(Mg,Fe2+,Al,◻)10(Si,Al,B)5O21(OH,F)
17.5.16HarkeriteCa12Mg4Al(SiO4)4(BO3)3(CO3)5 · H2O
17.5.17SerendibiteCa4(Mg6Al6)O4[Si6B3Al3O36]
17.5.18Stillwellite-(Ce)CeBSiO5
17.5.19Tadzhikite-(Ce)
17.5.20Melanocerite-(Ce)Ce5(SiO4,BO4)3(OH,O)
17.5.21Okanoganite-(Y)(Y,REE,Ca,Na,Th)16(Fe3+,Ti)(Si,B,P)10(O,OH)38F10
17.5.22Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
17.5.23Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
17.5.24Cappelenite-(Y)BaY6B6Si3O24F2
17.5.25DumortieriteAlAl6BSi3O18
17.5.26Holtite(Ta0.60.4)Al6BSi3O18
17.5.27DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3OH
17.5.28 FerridraviteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
17.5.29Axinite-(Mg)Ca4Mg2Al4[B2Si8O30](OH)2
17.5.30UviteCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)
17.5.32TienshaniteK(Na,K,◻)9Ca2Ba6Mn62+Ti6B12Si36O114(O,OH,F)11
17.5.33LeucospheniteNa4BaTi2B2Si10O30
17.5.34TaramelliteBa4(Fe3+,Ti)4O2[B2Si8O27]Clx; x = 0 to 1
17.5.35TitantaramelliteBa4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx
17.5.36NagashimaliteBa4(V3+,Ti)4(O,OH)2[B2Si8O27]Cl
17.5.37Chromium-draviteNa(Mg3)Cr63+(Si6O18)(BO3)3(OH)3(OH)
17.5.38WawayandaiteCa6Be9Mn22+BSi6O23(OH,Cl)15
17.5.39WerdingiteMg2Al14Si4B4O37
17.5.40Axinite-(Mn)Ca4Mn22+Al4[B2Si8O30](OH)2
17.5.41Axinite
17.5.42TinzeniteCa2Mn42+Al4[B2Si8O30](OH)2
17.5.44SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3OH
17.5.45Fluor-buergeriteNaFe33+Al6(Si6O18)(BO3)3O3F
17.5.46FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3OH
17.5.47Axinite-(Fe)Ca4Fe22+Al4[B2Si8O30](OH)2
17.5.48HomiliteCa2Fe2+B2(SiO4)2O2
17.5.49GrandidieriteMgAl3O2(BO3)SiO4
17.5.50Hyalotekite(Ba,Pb,K)4(Ca,Y)2(B,Be)2(Si,B)2Si8O28F
17.5.51Hellandite-(Y)(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2

Other Names for Garrelsite

Name in Other Languages:

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.

References for Garrelsite

Reference List:
Milton, C., Axelrod, J.M., Grimaldi, F.S. (1955) New mineral, garrelsite (Ba.65Ca.29Mg.06)4H6Si2B6O20, from the Green River formation, Utah. Bulletin of the Geological Society of America: 66: 1597-1597.

Fleischer, M. (1956) New mineral names. American Mineralogist: 41: 671-674.

Ghose, S., Ulbrich, H. (1973) The crystal structure of the silicoborate garrelsite, NaBa3Si2B7O16(OH)4. Naturwissenschaften: 60: 349-350.

Fleischer, M. (1974) New mineral names. American Mineralogist: 59: 632.

Milton, C., Pabst, A. (1974) Garrelsite, NaBa3Si2B7O16(OH)4. United States Geological Survey Journal of Research: 2: 213-218.

Ghose, S., Wan, C., Ulbrich, H.H. (1976) Structural chemistry of borosilicates. I. Garrelsite, NaBa3Si2B7O16(OH)4, a silicoborate with the pentaborate [B5O12]9- polyanion. Acta Crystallographica: B32: 824-832.

Grew, E.S., Anovitz, L.M. (1996) Boron: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Garrelsite

mindat.org URL:
https://www.mindat.org/min-1652.html
Please feel free to link to this page.

Localities for Garrelsite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
USA
 
  • California
    • Kern Co.
      • Kramer District (Kramer Borate District)
www.mineralsocal.org
Morgan, V. and Erd, R.C. (1969) Minerals of the Kramer borate district, California California Division of Mines and Geology Mineral Information Service: 22(9&10): 152; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 512.
  • Utah
    • Uintah Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
Am Min 46:379-393
      • Uteland Knoll District (Ouray District)
        • Ouray
Milton, C., Axelrod, J.M., Grimaldi, F.S. (1955) New mineral, garrelsite (Ba.65Ca.29Mg.06)4H6Si2B6O20, from the Green River formation, Utah. Bulletin of the Geological Society of America: 66: 1597-1597; Fleischer, M. (1956) New mineral names. American Mineralogist: 41: 671-674
Mineral and/or Locality  
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