Potassic-chlorohastingsite Mineral Data

General Potassic-chlorohastingsite Information

Chemical Formula: (K,Na)Ca2(Fe++,Mg)4Fe+++[Si6Al2O22](Cl,OH)2 Composition: Molecular Weight = 994.80 gm    Potassium   2.36 %  K     2.84 % K₂O    Sodium      0.92 %  Na    1.25 % Na₂O    Calcium     8.06 %  Ca   11.27 % CaO    Magnesium   2.44 %  Mg    4.05 % MgO    Aluminum    5.42 %  Al   10.25 % Al₂O₃    Iron       22.46 %  Fe   21.67 % FeO /  8.03 % Fe₂O₃    Silicon    16.94 %  Si   36.24 % SiO₂    Hydrogen    0.06 %  H     0.54 % H₂O    Chlorine    4.99 %  Cl    4.99 % Cl                 -   %   Cl   -1.13 % -O=Cl₂       Oxygen     36.35 %  O              ______        ______               100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: K_0.6Na_0.4Ca₂Fe²⁺₃MgFe³⁺(Si₆Al₂O₂₂)Cl_1.4(OH)_0.6 IMA Status: Approved IMA 1998 (Dana # Added) Locality: Dasshkesan Co-Fe deposit, Azerbaidzhan. Link to MinDat.org Location Data. Name Origin: Named after its composition and for Hastings Co., Ontario, Canada.. Synonym: Chlorohastingsite-K   Dashkesanite  

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Potassic-chlorohastingsite Crystallography

Axial Ratios: a:b:c =0.5553:1:0.294 Cell Dimensions: a = 9.991, b = 17.99, c = 5.29, Z = 2; beta = 104.99° V = 918.46 Den(Calc)= 3.60 Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m X Ray Diffraction: By Intensity(I/I_o): 8.53(1), 3.16(0.51), 2.749(0.23),2.839(0.18), 2.98(0.12), 3.32(0.11), 2.191(0.1), Crystal Structure:

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Oberti R , Ungaretti L , Cannillo E , Hawthorne F C , American Mineralogist , 78 (1993) p.746-752, The mechanism of Cl incorporation in amphibole, Sample: Cl(1), Locality: Sesia-Lanzo marble, Western Alps, Italy View Additional jPOWD Structure files for Potassic-chlorohastingsite [1]

 

Physical Properties of Potassic-chlorohastingsite

Cleavage: {110} Perfect, {100} Perfect Color: Dark green, Black. Density: 3.17 - 3.59, Average = 3.38 Diaphaneity: Transparent to translucent Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments. Habit: Tabular - Form dimensions are thin in one direction. Hardness: 6 - Orthoclase Luster: Vitreous (Glassy) Streak: greenish gray  

Optical Properties of Potassic-chlorohastingsite

Gladstone-Dale: CI meas= 0.077 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.134 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1905,KPDmeas= 0.2029,KC= 0.22
Ncalc = 1.7 - 1.79 Optical Data: Biaxial (-), a=1.669-1.68, b=1.682-1.695, g=1.684-1.705, bire=0.0150-0.0250  

Calculated Properties of Potassic-chlorohastingsite

Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Potassic-chlorohastingsite =3.38 gm/cc.
Fermion Index: Fermion Index = 0.01
Boson Index = 0.99 Photoelectric: PE_{Potassic-chlorohastingsite} = 9.12 barns/electron
U=PE_{Potassic-chlorohastingsite} x r_electron= 30.18 barns/cc.
Radioactivity:

GRapi = 33.34 (Gamma Ray American Petroleum Institute Units)
Concentration of Potassic-chlorohastingsite per GRapi unit = 3.00 (%)

Estimated Radioactivity from Potassic-chlorohastingsite - barely detectable

 

Potassic-chlorohastingsite Classification

Dana Class: 66.01.03a.15a (66)Inosilicate Double-Width Unbranched Chains, W=2   (66.01)with P=2 amphibole configuration   (66.01.03a)Group 2, the calcic amphiboles  

66.01.03a.01 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m

 

66.01.03a.02 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m

 

66.01.03a.03 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m

 

66.01.03a.04 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

 

66.01.03a.05 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

 

66.01.03a.06 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.06a Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m

 

66.01.03a.06b Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m

 

66.01.03a.06c Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m

 

66.01.03a.07 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m

 

66.01.03a.08 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m

 

66.01.03a.09 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m

 

66.01.03a.10 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m

 

66.01.03a.10a Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m

 

66.01.03a.11 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m

 

66.01.03a.12 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m

 

66.01.03a.12a Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m

 

66.01.03a.13 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.13a Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m

 

66.01.03a.13b Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m

 

66.01.03a.13c Potassic-ferropargasite KCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.14 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.15 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.15a Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m

 

66.01.03a.15b Fluoro-magnesiohastingsite! (Na,K)Ca2(Mg,Fe,Ti)5(Si,Al)8O22F2 C 2/m 2/m

 

66.01.03a.15c Potassic-magnesiohastingsite! (K,Na)Ca2(Mg,Fe,Fe,Al)5(Si,Al)8O22(OH,Cl)2 C 2/m 2/m

 

66.01.03a.15d Chloro-potassichastingsite! KCa2(Fe3MgFe)(Si6Al2)S8O22Cl2 C 2/m 2/m

 

66.01.03a.15e Fluoro-potassichastingsite! KCa2(Fe2,Mg2,Fe)S5(Si6Al2)8O22F2 C 2/m 2/m

 

66.01.03a.16 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono

 

66.01.03a.17 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono

 

66.01.03a.17a Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono

 

66.01.03a.17b Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m

 

66.01.03a.17c Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m

 

66.01.03a.18 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m

 

66.01.03a.19 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m

 

66.01.03a.20 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m

 

66.01.03a.20a Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m

Strunz Class: 09.DE.15 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.15 Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m

 

09.DE.15 Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m

 

09.DE.15 Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m

 

09.DE.15 Ferriwhittakerite! Na(NaLi)(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m

 

09.DE.15 Ferri-ottoliniite! [](Na,Li)(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m

 

09.DE.15 Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m

 

Other Potassic-chlorohastingsite Information

References: NAME( AmMin, V 84, p1688) See Also: Links to other databases for Potassic-chlorohastingsite :
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
11 - WWW-MINCRYST
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