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Dellaventuraite Mineral Data

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General Dellaventuraite Information

Help on Chemical  Formula: Chemical Formula: NaNa2(Mg2,Mn+++,Li,Ti)Si8O22O2
Help on Composition: Composition: Molecular Weight = 859.87 gm
   Potassium   1.82 %  K     2.19 % K2O
   Sodium      6.20 %  Na    8.36 % Na2O
   Lithium     0.73 %  Li    1.56 % Li2O
   Calcium     1.35 %  Ca    1.89 % CaO
   Magnesium   5.12 %  Mg    8.48 % MgO
   Titanium    3.34 %  Ti    5.57 % TiO2
   Manganese   5.43 %  Mn    7.80 % Mn2O3
   Aluminum    0.44 %  Al    0.83 % Al2O3
   Zinc        0.08 %  Zn    0.09 % ZnO
   Iron        4.61 %  Fe    6.59 % Fe2O3
   Silicon    26.00 %  Si   55.62 % SiO2
   Nickel      0.14 %  Ni    0.17 % NiO
   Hydrogen    0.09 %  H     0.84 % H2O
   Oxygen     44.66 %  O
             ______        ______ 
             100.00 %      100.02 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.4Na0.61Na1.71Ca0.29Mg1.81Zn0.01Ni0.02Li0.9Fe3+0.71Mn3+0.85Ti0.6Al0.1Si7.96Al0.04 O22(OH)0.8O1.2
Help on Environment: Environment: Occurs with leakeite, kornite, albite, braunite, and bixbyite associated with cross-cutting epigenetic veins that have reacted with regionally metamorphosed rocks containing Mn-rich minerals. Amphibole group
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Giancarlo Della Ventura, Universit� degli Studi di Roma Tre, for his extensive work on the crystal chemistry of synthetic amphiboles.
Help on Synonym: Synonym: IMA2003-061
 

Dellaventuraite Image

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  Dellaventuraite   Aegirine-augite

Comments: View in plane-polarized light of reddish brown dellaventuraite (OPTK) as an overgrowth on purple-gray aegirine-augite (AE-AG) in a matrix of rounded quartz (QZ) with minor rounded (high relief) apatite grains. (AmMin 90:306).
Location: Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Scale: Picture size 2.5 cm.
© American Mineralogist

Dellaventuraite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5497:1:0.2962
Help on Cell Dimensions: Cell Dimensions: a = 9.808, b = 17.84, c = 5.2848, Z = 2; beta = 104.653° V = 894.63 Den(Calc)= 3.19
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.697(1)(151), 2.542(0.9)(202), 3.127(0.8)(310),1.434(0.7)(661), 2.154(0.7)(261), 3.378(0.7)(131), 4.45(0.6)(021), 8.459(0.5)(110),
 

Physical Properties of Dellaventuraite

Help on Cleavage: Cleavage: {110} Perfect, {110} Perfect
Help on Color: Color: Pikish red.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale pink
 

Optical Properties of Dellaventuraite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2195,KC= 0.2328
Ncalc = 1.74
Help on Optical Data: Optical Data: Biaxial (+), a=1.687-1.689, b=1.69-1.694, g=1.72-1.722, bire=0.0330
 

Calculated Properties of Dellaventuraite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Dellaventuraite =3.19 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEDellaventuraite = 4.95 barns/electron
U=PEDellaventuraite x relectron= 15.54 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 25.83 (Gamma Ray American Petroleum Institute Units)
Concentration of Dellaventuraite per GRapi unit = 3.87 (%)

Estimated Radioactivity from Dellaventuraite - barely detectable

 

Dellaventuraite Classification

Help on  Dana Class: Dana Class: 66.01.03c.17 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.03c)Group 4, the sodic amphiboles
 
66.01.03c.01 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.02 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.03 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.04 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.05 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.06 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.07 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.08 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.09 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.09a Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
 
66.01.03c.09b Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
 
66.01.03c.10 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.11 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
 
66.01.03c.11a Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.01.03c.11b Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.01.03c.11c Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
 
66.01.03c.12 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.12a Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
 
66.01.03c.12b Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
 
66.01.03c.13 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
66.01.03c.14 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
 
66.01.03c.15 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
 
66.01.03c.16 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
 
66.01.03c.17 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family
 
09.DE.25 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
 
09.DE.25 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
 
09.DE.25 Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.25 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
 
09.DE.25 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.25 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.25 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
 
09.DE.25 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
 
09.DE.25 Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
 
09.DE.25 Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
 
09.DE.25 Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
 
09.DE.25 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m
 

Other Dellaventuraite Information

Help on References: References: NAME( AmMin 90:304) PHYS. PROP.(AmMin 90:304) OPTIC PROP.(AmMin 90:304)
Help on See Also: See Also: Links to other databases for Dellaventuraite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Dellaventuraite

NaNa2(Mg2,Mn+++,Li,Ti)Si8O22O2
Dana No: 66.01.03c.17 Strunz No: 09.DE.25
Locality:

 

Notes:

 

 
   
 


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