Rosasite Mineral Data + Say ROSASITE

General Rosasite Information

Help on Chemical  Formula: Chemical Formula: (Cu,Zn)2(CO3)(OH)2
Help on Composition: Composition: Molecular Weight = 222.04 gm
   Zinc      14.72 %  Zn   18.33 % ZnO
   Copper    42.93 %  Cu   53.74 % CuO
   Hydrogen   0.91 %  H     8.11 % H2O
   Carbon     5.41 %  C    19.82 % CO2
   Oxygen    36.03 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu1.5Zn0.5(CO3)(OH)2
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1908
Help on Locality: Locality: Rosas mine, Narcao, Cagliari, Sardegna (Sardinia), Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
 

Rosasite Image

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Rosasite

Comments: Rosasite on malachite after azurite. Blocky crystals of azurite to 2.5 cm in size, completely altered to malachite, then coated by pale sky-blue rosasite.
Location: Silver Bill mine, Gleeson, Cochise Co., Arizona, USA. Scale: 4 x 7.5 x 2 cm.
© Dan Weinrich

Rosasite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.3762:1:0.3373
Help on Cell Dimensions: Cell Dimensions: a = 12.873, b = 9.354, c = 3.156, Z = 4; beta = 110.36° V = 356.28 Den(Calc)= 4.14
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.708(1), 5.094(0.8), 2.601(0.7),
 

Physical Properties of Rosasite

Help on Cleavage: Cleavage: [010] Perfect, [100] Perfect
Help on Color: Color: Blue green, Light blue, Sky blue.
Help on Density: Density: 4 - 4.2, Average = 4.09
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite).
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: light blue
 

Optical Properties of Rosasite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1877,KPDmeas= 0.1895,KC= 0.1897
Help on Optical Data: Optical Data: Biaxial (-), a=1.672, b=1.829, g=1.83, bire=0.1580, 2V(Calc)=8, 2V(Meas)=0-5.
 

Calculated Properties of Rosasite

Help on Electron Density: Electron Density:

relectron=3.93 gm/cc
note: rRosasite =4.10 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0068
Boson Index = 0.9932
Help on Photoelectric: Photoelectric:

PERosasite = 26.27 barns/electron
U=PERosasite x relectron= 103.34 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rosasite is Not Radioactive

 

Rosasite Classification

Help on  Dana Class: Dana Class: 16a.3.1.1 (16a)Carbonates - Hydroxyl or Halogen
  (16a.3)where (A B)2 (XO3) Zq
  (16a.3.1)Rosasite Group
 
16a.3.1.1 Rosasite (Cu,Zn)2(CO3)(OH)2 P 21/a 2/m
 
16a.3.1.2 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 21/a 2/m
 
16a.3.1.3 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri
 
16a.3.1.4 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 21/a 2/m
 
16a.3.1.5 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 21/a 2/m
Help on  Strunz Class: Strunz Class: V/C.01-80 V - Nitrates, Carbonates and Borates
  V/C - Waterfree carbonates with unfamiliar anions
  V/C.01 - Azurite - Rosasite group and related compounds
 
V/C.01-10 Azurite Cu3(CO3)2(OH)2 P 21/a 2/m
 
V/C.01-20 Malachite Cu2(CO3)(OH)2 P 21/a 2/m
 
V/C.01-25 Georgeite Cu5(CO3)3(OH)4·6(H2O) None
 
V/C.01-30 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 21/a 2/m
 
V/C.01-40 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 21/a 2/m
 
V/C.01-50 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri
 
V/C.01-60 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 21/a 2/m
 
V/C.01-70 Nullaginite Ni2(CO3)(OH)2 P 21/m,P 21 Mono
 
V/C.01-80 Rosasite (Cu,Zn)2(CO3)(OH)2 P 21/a 2/m
 
V/C.01-90 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 21/a 2/m
 
V/C.01-100 Hydrozincite Zn5(CO3)2(OH)6 C 2/m 2/m
 
V/C.01-105 Brianyoungite Zn3(CO3,SO4)(OH)4 C 2/m 2/m
 
V/C.01-110 Aurichalcite (Zn,Cu)5(CO3)2(OH)6 P 21/m 2/m
 
V/C.01-120 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m
 
V/C.01-130 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m
 

Other Rosasite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Rosasite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 - Franklin Minerals(Dunn) 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - YupRocks 16 -École des Mines de Paris

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Print or Cut-and-Paste your Rosasite Specimen Label here :

Rosasite

(Cu,Zn)2(CO3)(OH)2
Dana No: 16a.3.1.1 Strunz No: V/C.01-80
Locality:

 

Notes:

 

 
   
 
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