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Namuwite

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National Museum Cardiff
Formula:
Zn4(SO4)(OH)6 · 4H2O
May contain considerable Cu; measured Zn:Cu ratios in samples from different localities: 2.5:1.5; 2.3:1.7; 3.3:0.8.
Colour:
Sea green
Lustre:
Pearly
Hardness:
2
Specific Gravity:
2.77
Crystal System:
Trigonal
Name:
An acronym for the NAtional MUseum of Wales.
Compare the closely related (but Cu-free) Unnamed (Basic Zinc Sulphate Hydrate).

Note: Well-developed, tabular "Namuwite" crystals from some slag localities in the Harz mountains, Germany, are in fact Unnamed (Gordaite-related Ca-Zn Sulphate Chloride Hydrate) (U. Kolitsch, unpubl. data).

May appear visually similar to schulenbergite and minohlite.


Hide all sections | Show all sections

Classification of NamuwiteHide

Approved
7.DD.50

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
31.4.7.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
4 : (AB)4(XO4)Zq·xH2O
25.5.3

25 : Sulphates
5 : Sulphates of Zn and Hg

Physical Properties of NamuwiteHide

Pearly
Colour:
Sea green
Streak:
Pale green
Hardness:
Cleavage:
Perfect
(0001)
Density:
2.77 g/cm3 (Measured)    2.81 g/cm3 (Calculated)

Optical Data of NamuwiteHide

Type:
Uniaxial
Pleochroism:
Weak
Comments:
Crystal form did not allow for accurate measure of refractive index of extraordinary ray.

Chemical Properties of NamuwiteHide

Formula:
Zn4(SO4)(OH)6 · 4H2O

May contain considerable Cu; measured Zn:Cu ratios in samples from different localities: 2.5:1.5; 2.3:1.7; 3.3:0.8.
IMA Formula:
Zn4SO4(OH)6 · 4H2O

Crystallography of NamuwiteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
P3
Cell Parameters:
a = 8.330(1) Å, c = 10.540(2) Å
Ratio:
a:c = 1 : 1.265
Unit Cell V:
633.38 ų (Calculated from Unit Cell)
Z:
2
Morphology:
60 micron hexagonal plates.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.59 (100)
4.15 (25)
2.71 (42)
2.63 (41)
2.41 (22)
1.57 (23)
1.55 (20)

Type Occurrence of NamuwiteHide

Place of Conservation of Type Material:
NAtional MUseum of Wales #NMW 27.111.GR414
Associated Minerals at Type Locality:

Synonyms of NamuwiteHide

Other Language Names for NamuwiteHide

German:Namuwit
Spanish:Namuwita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Gypsum4 photos of Namuwite associated with Gypsum on mindat.org.
Linarite3 photos of Namuwite associated with Linarite on mindat.org.
Schulenbergite2 photos of Namuwite associated with Schulenbergite on mindat.org.
Serpierite2 photos of Namuwite associated with Serpierite on mindat.org.
Hemimorphite2 photos of Namuwite associated with Hemimorphite on mindat.org.
Langite2 photos of Namuwite associated with Langite on mindat.org.
Smithsonite2 photos of Namuwite associated with Smithsonite on mindat.org.
Cuprite1 photo of Namuwite associated with Cuprite on mindat.org.
Posnjakite1 photo of Namuwite associated with Posnjakite on mindat.org.
Orthoserpierite1 photo of Namuwite associated with Orthoserpierite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DD.05FelsőbányaiteAl4(SO4)(OH)10 · 4H2OMon. 2 : P21
7.DD.10LangiteCu4(SO4)(OH)6 · 2H2OMon. m
7.DD.10PosnjakiteCu4(SO4)(OH)6 · H2OMon. m : Pm
7.DD.10WroewolfeiteCu4(SO4)(OH)6 · 2H2OMon. m : Pm
7.DD.15SpangoliteCu6Al(SO4)(OH)12Cl · 3H2OTrig. 3m : P3 1c
7.DD.20KtenasiteZn(Cu,Zn)4(SO4)2(OH)6 · 6H2OMon.
7.DD.25ChristeliteCu2Zn3(SO4)2(OH)6 · 4H2OTric.
7.DD.30CampigliaiteMn2+Cu4(SO4)2(OH)6 · 4H2OMon.
7.DD.30DevillineCaCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
7.DD.30OrthoserpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OOrth. mm2 : Pca21
7.DD.30SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OMon. 2/m : B2/b
7.DD.30NiedermayriteCdCu4(SO4)2(OH)6 · 4H2OMon. 2/m : P21/m
7.DD.30EdwardsiteCu3Cd2(SO4)2(OH)6·4H2O Mon. 2/m : P21/b
7.DD.35Carrboydite[(Ni1-xAlx)(OH)2][SO4]x/2 · nH2OHex.
7.DD.35Glaucocerinite(Zn1-xAlx)(OH)2(SO4)x/2 · nH2OHex.
7.DD.35Honessite(Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2OTrig.
7.DD.35Hydrohonessite(Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2OHex.
7.DD.35MotukoreaiteMg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : R3m
7.DD.35Mountkeithite[(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2OHex.
7.DD.35ShigaiteMn6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig.
7.DD.35WermlanditeMg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : P3c1
7.DD.35WoodwarditeCu1-xAlx(OH)2[SO4]x/2 · nH2OTrig. 3m (3 2/m) : R3m
7.DD.35ZincaluminiteZn6Al6(SO4)2(OH)16 · 5H2O
7.DD.35Hydrowoodwardite(Cu1-xAlx)(OH)2[SO4]x/2 · nH2OTrig. 3m (3 2/m) : R3m
7.DD.35ZincowoodwarditeZn1-xAlx(OH)2[SO4]x/2 · nH2OTrig.
7.DD.35NatroglaucoceriniteZn6Al3(OH)18[Na(H2O)6](SO4)2•6H2OHex.
7.DD.35NikischeriteFe2+6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig.
7.DD.40Lawsonbauerite(Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2OMon. 2/m : P21/b
7.DD.40Torreyite(Mg,Mn2+)72Mn2+2Zn4(SO4)2(OH)22 · 8H2OMon. 2/m : P21/b
7.DD.45MooreiteMg92Mn2Zn4(SO4)2(OH)26 · 8H2OMon. 2/m : P2/b
7.DD.55BechereriteZn7Cu(OH)13[(SiO(OH)3(SO4)]Trig. 3 : P3
7.DD.60Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2OMon. 2/m
7.DD.65VonbezingiteCa6Cu3(SO4)3(OH)12 · 2H2OMon. 2/m : P21/b
7.DD.70RedgilliteCu6(SO4)(OH)10 · H2OMon. 2/m : P21/b
7.DD.75ChalcoalumiteCuAl4(SO4)(OH)12 · 3H2OMon. 2 : P21
7.DD.75Nickelalumite(Ni,Cu)Al4(SO4,(NO3)2)(OH)12 · 3H2OMon.
7.DD.75KyrgyzstaniteZnAl4(SO4)(OH)12·3H2OMon.
7.DD.80GuarinoiteZn6(SO4)(OH)10 · 5H2OHex.
7.DD.80Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2OTrig.
7.DD.80ThérèsemagnaniteNaCo4(SO4)(OH)6Cl·6H2OHex.
7.DD.80UM1992-30-SO:CCuHZn(Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2OTrig. 3 : P3
7.DD.85MontetrisaiteCu6(SO4)(OH)10 · 2H2OOrth. mm2 : Cmc21

Related Minerals - Dana Grouping (8th Ed.)Hide

31.4.7.2OsakaiteZn4(SO4)(OH)6 · 5H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.5.1ZinkositeZnSO4Orth.
25.5.2GoslariteZnSO4 · 7H2OOrth. 2 2 2 : P21 21 21
25.5.4KtenasiteZn(Cu,Zn)4(SO4)2(OH)6 · 6H2OMon.
25.5.5Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2OMon. 2/m
25.5.6Boyleite(Zn,Mg)SO4 · 4H2OMon. 2/m : P21/b
25.5.7SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OMon. 2/m : B2/b
25.5.8OrthoserpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OOrth. mm2 : Pca21
25.5.9ZincaluminiteZn6Al6(SO4)2(OH)16 · 5H2O
25.5.10Glaucocerinite(Zn1-xAlx)(OH)2(SO4)x/2 · nH2OHex.
25.5.11GunningiteZnSO4 · H2OMon. 2/m : B2/b
25.5.12ChaidamuiteZnFe3+(SO4)2(OH) · 4H2OTric. 1 : P1
25.5.13Bianchite(Zn,Fe)SO4 · 6H2OMon. 2/m : P2/m
25.5.15Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2OMon.
25.5.16Zincobotryogen(Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2OMon. 2/m
25.5.17SchuetteiteHg2+3(SO4)O2Trig. 3 2 : P31 2 1
25.5.18Gianellaite[(NHg2)2](SO4)(H2O)xIso. 4 3m : F4 3m

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 NamuwiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bevins, R. E., Turgoose, S. & Williams, P. A. (1982): Namuwite, (Zn,Cu)4SO4(OH)6·4H2O, a new mineral from Wales. Mineral. Mag., 46, 51-54.
American Mineralogist (1983): 68: 281.
Lee Groat (1996) The crystal structure of namuwite, a mineral with Zn in tetrahedral and octahedral coordination, and its relationship to the synthetic basic zinc sulfates. American Mineralogist: 81: 238-243.

Internet Links for NamuwiteHide

Localities for NamuwiteHide

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.
Australia
 
  • New South Wales
    • Yancowinna Co.
Elliott, P. (2010). Crystal chemistry of cadmium oxysalt and associated minerals from Broken Hill, New South Wales (Doctoral dissertation).
Austria
 
  • Carinthia
    • Gurktaler Alpen
      • St Veit an der Glan
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    • Karawanken
      • Finkenstein
        • Mallestiger Mittagskogel
[Der Aufschluss 1996,4 p.186-192]
  • Salzburg
    • Saalfelden
      • Leogang
        • Hütten
          • Schwarzleograben
            • Schwarzleo District
Poeverlein, R. (2008): Euchroit und seine Begleiter vom prähistorischen Bergbau, Leogang, Österreich. Lapis, 33 (5), 13-22.
  • Tyrol
    • North Tyrol
      • Inn valley
        • Brixlegg - Schwaz area
          • Brixlegg - Rattenberg
Schnorrer, G. & Poeverlein, R. (2008): Schwaz-Brixlegger Fundstellen. 6. Die Minerale des Gratlspitz bei Brixlegg in Tirol. Aufschluss 59, 7-28.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Příbram
RÜSENBERG, K. A. & PAULIŠ, P. (1996): Umbildungen und Neubildungen in den Schlackehalden der Blei- und Silberhütte von Příbram/ČR. Aufschluss 47, 267-287 (in German).
France
 
  • Occitanie
    • Hautes-Pyrénées
      • Aure Valley
Patrice Queneau Collection
Germany
 
  • Hesse
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Aufschluss 42, 155-171.
  • Lower Saxony
    • Harz
      • Bad Harzburg
        • Oker valley
Niels van Velzen collection Mindat Photo ID: 618515. Obtained from Stichting GEA Amsterdam in 2004
      • Clausthal-Zellerfeld
        • Bockswies veins
          • Oberschulenberg
Lapis, 11 (1), 9-18+42
      • Goslar
        • Astfeld
van den Berg, W. & van Loon, C. (1990): Slag Minerals from the Rammelsberg, Harz Mountains, Germany. UK Journal of Mines & Minerals, 8, 18-23.; Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
        • Grane Reservoir
Groat L A (1996) The crystal structure of namuwite, a mineral with Zn in tetrahedral and octahedral coordination, and its relationship to the synthetic basic zinc sulfates. American Mineralogist 81, 238-243
  • North Rhine-Westphalia
    • Bergisches Land
      • Engelskirchen
        • Loope
Habel, B. & Linder, R. (2009): Die Grube "Castor" bei Loope und ihre Mineralien. Mineralien-Welt 20 (3), 10-23
    • Eifel
      • Mechernich
        • Kall
Blaß, G. & Graf, H. W. (1995): Neufunde von Schlackenhalden in der nördlichen Eifel (II). Mineralien-Welt, 6 (3), 28-31.
    • Sauerland
      • Iserlohn
        • Letmathe
Bender/Marl, D. & Krimmelbein/Altena, W. (1994) Aktuelle Übersicht: Mineralien der Zinkhütte Genna/Sauerland. Stand Juni 1994. Mineralien-Welt, 4/94, 10.; http://www.mg-mineralien-fossilien.de/?Rpage=sauerland/?Rpage=letmathe1.html
      • Marsberg
        • Copper mines
Schnorrer, G. (1993): Mineralogische Notizen VI. Aufschluss, 44, 44-58; Wittern: "Mineralfundorte in Deutschland", 2001
      • Meschede
        • Ramsbeck
Günther SCHNORRER-KÖHLER, Aufschluss 36: 217-235
    • Siegerland
      • Müsen
Weiss. "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Niederschelden
SCHNORRER, G. (1995): Mineralogische Neuheiten von bekannten deutschen Fundorten. Lapis 20 (12), 43-48; 62.; Heinrich, M. & Reinhardt, M. (2011): Die Mineralien der Kobaltgrube "Alte Buntekuh" bei Niederschelden im Siegerland. Mineralien Welt. 22 (3): 14-27
      • Wilnsdorf
Lapis, 12 (1), 11-18+42.
  • Rhineland-Palatinate
    • Eifel
      • Bad Neuenahr-Ahrweiler
        • Hönningen
GRAF, H.-W. (1992): Mineralien der Nordeifel (2).- Mineralien-Welt, 3, H. 3, p. 28.
      • Mayen
        • Langenfeld
          • St Jost
Graf, HW., (1991): Die Grube Bendisberg, bei Virneburg / Eifel, Mineralien-Welt 5/91
    • Hunsrück
      • St Goar
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Lahn valley
Wittern: "Mineralfundorte in Deutschland", 2001
        • Braubach
Schnorrer-Köhler, G. & David, W. (1991): Die Blei- und Silberhütte Braubach und ihre Haldenminerale. Lapis, 16 (1), 38-49; 58 (in German).
        • Frücht
Der Aufschluss Vol.55, March/April 2004
    • Siegerland
      • Niederfischbach
Weiss: "Mineralfundstellen, Deutschland West", 1990
    • Taunus
      • St Goarshausen
        • Wellmich
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Westerwald
      • Linz am Rhein
        • Rheinbreitbach
Weiss: "Mineralienfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony-Anhalt
    • Mansfeld Basin
      • Hettstedt
        • Copper-Silver smelter (Gottesbelohnung smelter) slag locality
Mineralien Welt 15 Jg.Heft 2 März-April 2004 and Mineralien Welt 19Jg Heft1 Jan -Febr, 2008 Hoorst Knoll
  • Saxony
    • Erzgebirge
      • Annaberg District
        • Königswalde
J. Gröbner und U. Kolitsch (2006): Neufunde aus dem Erzgebirge (II). Mineralien-Welt 17 (3), 22-27.
      • Freiberg District
        • Freiberg
          • Himmelfahrt Mine
Wittern: "Mineralfundorte in Deutschland", 2001
      • Schwarzenberg District
        • Grünhain-Beierfeld
          • Beierfeld
[MinRec 30:203]
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
Katerinopoulos, A. & Zissimopoulou, E. (1994): New mineral occurences from the Laurium mines. Mineralogical Record, 25, 279-280.
No reference listed
No reference listed
No reference listed
Schnorrer-Köhler, G., Rewitzer, C., Standfuss, L. & Standfuss, K. (1988): Weitere Neufunde aus Lavrions antiken Schlacken. Lapis 13 (2), 11-14.
        • Passa Limani area
Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals of the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
        • Sounion area
ko.jansen; Laurion tHE MINERALS IN THE ANCIENT SLAGS BY PIET GELAUDE ETC.
Italy
 
  • Sardinia
    • Carbonia-Iglesias Province
      • Nuxis
        • Tamara Mt.
"Giorgio Bortolozzi (visual identification)"
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Mocheni Valley
        • Frassilongo
          • Roveda
"Giorgio Bortolozzi (visual identification)"
  • Tuscany
    • Livorno Province
      • Campigliese (Campiglia Mountains; Campiglia Ridge)
        • Campiglia Marittima
Bonotti, F., Nannoni, R. (2012): Le scorie antiche della Toscana centrale. Riv. Mineral. Ital., 36, 3 (3-2012), 186-94.
      • Piombino
Muenchener Micromounter-Lithothek
  • Veneto
    • Vicenza Province
      • Torrebelvicino
        • Mercanti Valley
Pegoraro S., Orlandi P., Chiereghin P., Contin.A. and Toniolo E. (2009): I minerali del Monte Trisa, Torrebelvicino, Vicenza. Rivista Mineralogica Italiana, No. 3, 160-179
Pegoraro S., Orlandi P., Chiereghin P., Contin.A. and Toniolo E. (2009): I minerali del Monte Trisa, Torrebelvicino, Vicenza. Rivista Mineralogica Italiana, No. 3, 160-179
        • Monte Naro
          • Monte Naro - Riolo Valley side
            • Contrada Trentini
C. Lemanski, Jr. collection (6787CL).
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Djebel Saghro (Jbel Saghro)
        • Bou Skour district
Georges FAVREAU collection
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Minerals and their Localities Bernard and Hyrsl pg. 420; American Mineralogist, Volume 81, pages 238-243, 1996
Norway
 
  • Buskerud
    • Drammen
      • Konnerud
Selbekk R.S. (2010): Norges mineraler. En revidert utgave av Norges mineraler (Neumann 1985). Tapir-NGU-NHM. p 245
    • Modum
      • Åmot
Raade,G.(1995): "Secondary Zn and Cu minerals from contact deposits of the Oslo region, Norway".Bergverksmuseet Skrift nr 9, 18-26
Romania
 
  • Bihor Co.
    • Brusturi
G.Koller,2009
Slovenia
 
  • Radlje ob Dravi (Mahrenberg)
Trajanova, M. & Zorz, Z. (2013): The abandoned Remshnig mine, occurrence of rare minerals; Palaeozoic or Tertiary ore mineralization? Berichte Geol. B.-A., 99, 11th Workshop on Alpine Geological Studies & 7th IFAA, 90-91.
UK
 
  • England
    • Cumbria
      • Alston Moor District
        • Nenthead
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols. Livingstone, A., Bridges, T. F. and Bevins, R. E. (1990): Schulenbergite and namuwite from Smallcleugh Mine, Nenthead, Cumbria. J. Russell Soc. 3, 23-24.; American Mineralogist, Volume 81, pages 238-243, 1996
      • Ullswater
        • Patterdale
Self collected David Clayton
    • Staffordshire
      • Ecton
        • Back of Ecton
UKJMM 15
  • Scotland
    • Strathclyde
      • South Lanarkshire
        • Leadhills
          • Mine Hill-Broad Law
S.Rust Collection.
  • Wales
    • Ceredigion
      • Ceulanymaesmawr
        • Talybont
          • Nant-y-Moch Reservoir area
      • Cwmrheidol
        • Ponterwyd
BMS Database
      • Trefeirig
        • Pen-bont Rhydybeddau
S. Rust collection
      • Upper Llanfihangell-y-Creuddyn
        • Pontrhydygroes
BMS Database, UKJMM 17
    • Conwy
      • Gwydyr Forest area
        • Betws-y-coed
Mineralogical Magazine 1982 46 : 51-54.
    • Powys
      • Machynlleth
        • Dylife
American Mineralogist, Volume 81, pages 238-243, 1996; BMS Database
      • Penegoes
American Mineralogist, Volume 81, pages 238-243, 1996
USA
 
  • New York
    • St. Lawrence Co.
      • Balmat-Edwards Zinc District
        • Balmat
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
  • Utah
    • Tooele Co.
      • Oquirrh Mts
        • Ophir District
          • Ophir Hill area
Rocks & Minerals 83:1 pp 52-62
Mineral and/or Locality  
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