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Grandviewite

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Formula:
Cu3Al9(SO4)2(OH)29
Colour:
Turquoise-blue
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
2.72 (Calculated)
Crystal System:
Monoclinic
Name:
Named after the type locality.
Type material shows greenish blue (rosasite-like) sprays of acicular crystals, grown on a chalcoalumite layer, which covers a mixture of cyanotrichite and visually indistinguishable carbonatecyanotrichite. Also grown directly on cyanotrichite.


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Classification of GrandviewiteHide

Approved
Approval Year:
2007
7.BB.60

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
B : With medium-sized cations
30.1.19.

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1

Pronounciation of GrandviewiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of GrandviewiteHide

Vitreous
Colour:
Turquoise-blue
Hardness:
Tenacity:
Sectile
Cleavage:
Perfect
On {100} or {001}
Density:
2.72 g/cm3 (Calculated)

Optical Data of GrandviewiteHide

Type:
Biaxial (-)
RI values:
nα = 1.590(4) nβ = 1.625(4) nγ = 1.645(4)
2V:
Calculated: 72°
Max Birefringence:
δ = 0.055
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
Z = pale blue-green, Y = very pale yellow, X = very pale yellow

Chemical Properties of GrandviewiteHide

Formula:
Cu3Al9(SO4)2(OH)29

Crystallography of GrandviewiteHide

Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P2
Cell Parameters:
a = 10.908 Å, b = 6.393 Å, c = 10.118 Å
β = 107.47°
Ratio:
a:b:c = 1.706 : 1 : 1.583
Unit Cell V:
673.03 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Flattened, acicular crystals.
Comment:
Space group P2, P21, Pm, P2/m or P21/m.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.667 (33)
6.208 (100)
5.287 (35)
3.949 (79)
3.625 (10)
2.990 (9)
2.816 (14)
2.721 (8)
2.413 (9)
2.019 (8)

Type Occurrence of GrandviewiteHide

Synonyms of GrandviewiteHide

Other Language Names for GrandviewiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Brochantite28 photos of Grandviewite associated with Brochantite on mindat.org.
Chalcoalumite22 photos of Grandviewite associated with Chalcoalumite on mindat.org.
Cyanotrichite20 photos of Grandviewite associated with Cyanotrichite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.BB.05CaminiteMg7(SO4)5(OH)4 · H2OTet.
7.BB.10HauckiteFe3+3(Mg,Mn2+)24Zn18(SO4)4(CO3)2(OH)81Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
7.BB.15AntleriteCu3(SO4)(OH)4Orth. mmm (2/m 2/m 2/m)
7.BB.20DolerophaniteCu2(SO4)OMon. 2/m : B2/m
7.BB.25BrochantiteCu4(SO4)(OH)6Mon. 2/m : P21/b
7.BB.30VergasovaiteCu3(SO4)(MoO4,SO4)OOrth.
7.BB.35KlebelsbergiteSb4O4(SO4)(OH)2Orth. mm2
7.BB.40SchuetteiteHg2+3(SO4)O2Trig. 3 2 : P31 2 1
7.BB.45ParaotwayiteNi(OH)2-x(SO4,CO3)0.5xMon.
7.BB.50XocomecatliteCu3(TeO4)(OH)4Orth.
7.BB.55Pauflerite(V4+O)SO4Orth. mmm (2/m 2/m 2/m) : Pnma

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 GrandviewiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Colchester, D. M., Klish, D. R., Leverett, P. & Williams, P. A. (2008): Grandviewite, Cu3Al9(SO4)2(OH)29, a new mineral from the Grandview Mine, Arizona, USA. Australian Journal of Mineralogy, 14 (2), 51-54.

Internet Links for GrandviewiteHide

Localities for GrandviewiteHide

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.
Argentina
 
  • Catamarca
    • Andalgalá Department
Hubert Putz (EDS- and PXRD-analysed, will be published; pers. comm. to Uwe Kolitsch 2009)
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German). [identification announced; no description given yet]
USA (TL)
 
  • Arizona
    • Coconino Co.
      • Grand Canyon
        • Horseshoe Mesa
Australian J. Mineralogy 14(2),51-54(2008)
Mineral and/or Locality  
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