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Norbergite

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Formula:
Mg3(SiO4)(F,OH)2
System:
Orthorhombic
Colour:
Orange-yellow, yellow, ...
Lustre:
Sub-Vitreous, Resinous, Waxy
Hardness:
6 - 6½
Name:
Named in 1926 by Per Geijer after the type locality: The Östanmoss Mine, Norberg, Västmanland, Sweden.
Usually isolated rounded grains, rarely as crude crystals, well-formed crystals very rare.

Visit gemdat.org for gemological information about Norbergite.

Classification of Norbergite

Approved, 'Grandfathered' (first described prior to 1959)
9.AF.40

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
52.3.2a.1

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
17.1.9

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)
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http://www.mindat.org/min-2925.html
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Type Occurrence of Norbergite

Occurrences of Norbergite

Geological Setting:
High grade marble

Physical Properties of Norbergite

Sub-Vitreous, Resinous, Waxy
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Orange-yellow, yellow, orange to brown.
Streak:
White
Hardness (Mohs):
6 - 6½
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.177 g/cm3 (Measured)    3.186 g/cm3 (Calculated)

Crystallography of Norbergite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 8.747(6) Å, b = 4.710(4) Å, c = 10.271(8) Å
Ratio:
a:b:c = 1.857 : 1 : 2.181
Unit Cell Volume:
V 423.15 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space-group Pmcn (non-standard setting); data for synthetic material
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.14 (18)
4.371 (30)
4.149 (20)
3.327 (20)
3.227 (25)
3.058 (100)
2.639 (75)
2.408 (35)
2.237 (35)
2.255 (70)
2.230 (80)
1.7357 (20)
1.7241 (50)
1.4763 (45)
Comments:
ICDD 11-686, For synthetic material

Optical Data of Norbergite

Type:
Biaxial (+)
RI values:
nα = 1.563 - 1.567 nβ = 1.567 - 1.579 nγ = 1.590 - 1.593
2V:
Measured: 44° to 50°
Birefringence:
0.027
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r>v, slight to strong

Chemical Properties of Norbergite

Formula:
Mg3(SiO4)(F,OH)2
All elements listed in formula:
Common Impurities:
Ti,Al,Fe,Mn,Zn,Ca,H2O

Relationship of Norbergite to other Species

Other Members of Group:
Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
ClinohumiteMg9(SiO4)4F2
Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
HydroxylchondroditeMg5(SiO4)2(OH)2
HydroxylclinohumiteMg9(SiO4)4(OH)2
9.AF.05SillimaniteAl2(SiO4)O
9.AF.10AndalusiteAl2(SiO4)O
9.AF.10KanonaiteMn3+Al(SiO4)O
9.AF.15KyaniteAl2(SiO4)O
9.AF.20MulliteAl4+2xSi2-2xO10-x
9.AF.20Krieselite(Al,Ga)2(GeO4)(OH)2
9.AF.23BoromulliteAl9BSi2O19
9.AF.25YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)
9.AF.30MagnesiostauroliteMg(Mg,Li)3(Al,Mg)18Si8O44(OH)4
9.AF.30StauroliteFe22+Al9Si4O23(OH)
9.AF.30ZincostauroliteZn2Al9Si4O23(OH)
9.AF.35TopazAl2(SiO4)(F,OH)2
9.AF.45AlleghanyiteMn52+(SiO4)2(OH)2
9.AF.45Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
9.AF.45ReinhardbraunsiteCa5(SiO4)2(OH,F)2
9.AF.45KumtyubeiteCa5(SiO4)2F2
9.AF.45HydroxylchondroditeMg5(SiO4)2(OH)2
9.AF.50Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
9.AF.50Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2
9.AF.50Unnamed (Ca-analogue of Humite)Ca7(SiO4)4F2
9.AF.55ClinohumiteMg9(SiO4)4F2
9.AF.55SonoliteMn92+(SiO4)4(OH,F)2
9.AF.55HydroxylclinohumiteMg9(SiO4)4(OH)2
9.AF.60LeucophoeniciteMn72+(SiO4)3(OH)2
9.AF.65Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2
9.AF.70JerrygibbsiteMn92+(SiO4)4(OH)2
9.AF.75FranciscaniteMn62+(V5+,☐)2(SiO4)2(O,OH)6
9.AF.75ÖrebroiteMn32+(Sb5+,Fe3+)(SiO4)(O,OH)3
9.AF.75WeliniteMn62+(W6+,Mg)2(SiO4)2(O,OH)6
9.AF.80EllenbergeriteMg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10
9.AF.85Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
9.AF.85MagnesiochloritoidMgAl2(SiO4)O(OH)2
9.AF.85Ottrélite(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2
9.AF.90PoldervaartiteCaCa[SiO3(OH)](OH)
9.AF.90OlmiiteCaMn2+[SiO3(OH)](OH)
17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
17.1.3AgrelliteNaCa2Si4O10F
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2O
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2O
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2
17.1.8LeucophaniteNaCaBeSi2O6F
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
17.1.12ClinohumiteMg9(SiO4)4F2
17.1.13CanasiteK3Na3Ca5Si12O30(OH)4
17.1.14Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
17.1.15CuspidineCa4(Si2O7)(F,OH)2
17.1.16BultfonteiniteCa2(HSiO4)F · H2O
17.1.17ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
17.1.19YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
17.1.22Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4
17.1.23BurpaliteNa2CaZr(Si2O7)F2
17.1.24SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2
17.1.25Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O
17.1.26Zircophyllite(K,Na)3(Mn,Fe2+)7(Zr,Ti)2Si8O24(O,OH,F)7
17.1.27JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
17.1.28RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
17.1.29NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2
17.1.30SonoliteMn92+(SiO4)4(OH,F)2

Other Names for Norbergite

Name in Other Languages:
German:Norbergit
Simplified Chinese:块硅镁石
Spanish:Norbergita

Other Information

May fluoresce bright to weak yellow to pale yellow in SW; less bright in mid-wave UV, not fluorescent in long wave.
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 Norbergite

Reference List:
Geijer, Per (1926): Norbergite and fluoborite, two new minerals from the Norberg mining district. Geol. Fören. Förhandl. Stockholm, 48, 84-85.
Larsen, Esper S., Bauer, Lawson H., and Berman, Harry (1928) Norbergite from Franklin, New Jersey, American Mineralogist, v. 13, p. 349-353.
Gibbs, G. V. and Paul H. Ribbe (1969): The crystal structure of the humite minerals: I. Norbergite. American Mineralogist 54, 376-390.
American Mineralogist (1982): 67: 538.

Internet Links for Norbergite

Specimens:
The following Norbergite specimens are currently listed for sale on minfind.com.

Localities for Norbergite

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.
Australia
 
  • Tasmania
    • Waratah district
      • Waratah
Bottrill
Canada
 
  • Ontario
    • Haliburton Co.
      • Cardiff Township
Ann P.Sabina (1986), Rocks and Minerals for the Collector, Bancroft-Parry Sound Area and Southern Ontario. GSC Misc. Report 39
    • Peterborough Co.
      • Galway Township
Geological Survey of Canada Miscellaneous Survey 39.
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
Strübel, Zimmer: "Lexikon der Minerale", 2nd Ed., 1991; Kenneth L. Currie and Otto van Breemen (1996)The origin of rare minerals in the Kipawa syenite complex, western Quebec. Can Mineral 34:435-451
    • Outaouais
      • Pontiac RCM
        • Otter Lake
M A G Lafontaine (1979) Uranium-Thorium Deposite at the Yates Mine, Huddersfield Township, Quebec. MSc thesis, University of Ottawa.
Finland
 
  • Southwestern Finland Region
    • Pargas (Parainen)
No reference listed
Harwood Mineral Collection, University Of Manchester, reference nr. 553
Italy
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
        • Monte Somma
          • Ercolano
            • San Vito
Cassinelli C. (1986) - Norbergite e Thaumasite della Cava San Vito. Due nuove specie del Vesuvio - Rivista Min. Italiana, Milano, fasc. 1, 1986, pp. 36-39
    • Phlegrean Volcanic Complex
      • Salerno Province
        • Nocera Inferiore
Carati, M., (????): I minerali degli inclusi metamorfosati nel tufo grigio campano, ???
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Fiemme Valley
        • Predazzo
Ferry J.M., Wing B.A., Penniston-Dorland S.C., Rumble D. (2002): The direction of fluid flow during contact metamorphism of siliceous carbonate rocks: new data for the Monzoni and Predazzo aureoles, northern Italy, and a global review. Contrib. Mineral. Petrol., 142, 679–699.
Myanmar
 
  • Mandalay Division
    • Pyin-Oo-Lwin District
      • Mogok Township
        • Mogok Valley
Moore, T. (2004): What's New in Minerals. Denver Show 2003. Mineralogical Record. 35 (2), 151-156
Pakistan
 
  • Gilgit-Baltistan (Northern Areas)
    • Gilgit District
      • Hunza Valley
Bernard and Hyršl, 2004. Minerals and Their Localities
Romania
 
  • Bihor Co.
    • Nucet
No reference listed
Russia
 
  • Northern Region
    • Karelia Republic
      • Ladoga Region
No reference listed
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
Sweden
 
  • Västmanland
    • Norberg
Holtstam, D., Andersson, U.B. (2007): The REE minerals of the Bastnäs-type deposits, South-Central Sweden. Canadian Mineralogist. 45, 1073-1114
No reference listed
      • Röberg ore field
Geijer, P. (1926): Norbergite and Fluoborite, two new minerals from the Norberg mining district. Preliminary report. Geologiska Föreningens i Stockholm Förhandlinger. 48, 84-85; Jansson, M. Förekomster med ceriummineral i stråket Möklinta, Norberg, Riddarhyttan och Nora.
No reference listed
USA
 
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
          • Franklin Marble
Palache(1935):102-103; Dunn(1995):Pt2:163 & Pt3:346.
Rocks & Min.: 21:760-761.
Betancourt, P.P. (The Picking Table, Vol. 27(2):2-10; Dunn(1995):Pt3:346.
Dunn(1995):Pt2:161.
        • Ogdensburg
          • Sterling Hill
Dunn(1995):Pt3:346.
Sight identigfication by experienced local collectors and museum officials.
      • Hamburg
Dunn, P.J. (1995), Pt 2: 169.
      • Hardyston Township
        • Rudeville
Sinhalite = personal communication with Dr. Paulus Moore (unpublished); remainder - common knowledge among local collectors.
      • Sparta Township
A Quest for New Jersey Minerals, Robert Speiser (1978):9.
      • Vernon Township
        • McAfee
Observed David S. Bernstein, February of 2012
  • New York
    • Orange Co.
      • Town of Warwick
        • Amity
Rhein Collection
    • St. Lawrence Co.
      • Balmat-Edwards Zinc District
NY State Museum spec. no. 12664
Petersen, E., Essene, D., Peacor, D. (1982): Fluorine end-member micas and amphiboles, American mineralogist, Vol. 67, 538-544
A.Mathauser collection
      • Gouverneur
Fredric Schuster
  • Vermont
    • Windham Co.
      • Townshend
Rocks & Min. Vol. 71, (1996)
Mineral and/or Locality  
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