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Hendricksite Mineral Data

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General Hendricksite Information

Help on Chemical  Formula: Chemical Formula: K(Zn,Mg,Mn)3Si3AlO10(OH)2
Help on Composition: Composition: Molecular Weight = 493.25 gm
   Potassium   7.13 %  K     8.59 % K2O
   Magnesium   2.46 %  Mg    4.09 % MgO
   Manganese  10.02 %  Mn   12.94 % MnO
   Aluminum    7.11 %  Al   13.44 % Al2O3
   Zinc       18.56 %  Zn   23.10 % ZnO
   Silicon    15.37 %  Si   32.89 % SiO2
   Hydrogen    0.41 %  H     3.65 % H2O
   Oxygen     38.92 %  O
             ______        ______ 
             100.00 %       98.70 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.9Zn1.4Mn2+0.9Mg0.5Si2.7Al1.3O10(OH)2
Help on Environment: Environment: Restricted to lens or sheet like skarn bodies in a metamorphosed zinc deposit.
Help on IMA Status: IMA Status: Approved IMA 1966
Help on Locality: Locality: Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Dr. Sterling B. Hendricks (1902-?), American crystallographer and chemist, a student of micas.
Help on Name Pronunciation: Name Pronunciation: Hendricksite + Pronunciation Say HENDRICKSITE

Hendricksite Image

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  Celsian   Hendricksite

Comments: Gray massive celsian with dark red hendricksite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Reddish black hendricksite crystal in cream-colored willemite.
Location: 'Mill Site', Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hendricksite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5606:1:1.0746
Help on Cell Dimensions: Cell Dimensions: a = 5.34, b = 9.524, c = 10.235, Z = 2; beta = 100.07° V = 512.51 Den(Calc)= 3.20
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): 10.2(1), 3.398(0.6), 5.094(0.36),

Physical Properties of Hendricksite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Copper brown, Red, Reddish black.
Help on Density: Density: 2.86 - 3.43, Average = 3.14
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Streak: Streak: red brown

Optical Properties of Hendricksite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.063 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2043,KPDmeas= 0.2079,KC= 0.1957
Ncalc = 1.56 - 1.67
Help on Optical Data: Optical Data: Biaxial (-), a=1.598-1.624, b=1.658-1.686, g=1.66-1.697, bire=0.0620-0.0730, 2V(Calc)=20-44, 2V(Meas)=2-5. Dispersion r < v slight.
Help on Pleochroism (x): Pleochroism (x): pale yellow.
Help on Pleochroism (y): Pleochroism (y): light chestnut brown.
Help on Pleochroism (z): Pleochroism (z): light chestnut brown.

Calculated Properties of Hendricksite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Hendricksite =3.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHendricksite = 13.25 barns/electron
U=PEHendricksite x relectron= 41.31 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 100.31 (Gamma Ray American Petroleum Institute Units)
Concentration of Hendricksite per GRapi unit = 1.00 (%)

Estimated Radioactivity from Hendricksite - barely detectable


Hendricksite Classification

Help on  Dana Class: Dana Class: 71.02.02b.06 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.02)with 2:1 Layers
  (71.02.02b)Mica Group (Biotite subgroup)
71.02.02b.01 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m
71.02.02b.01a Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m
71.02.02b.01b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m
71.02.02b.01c Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m
71.02.02b.02 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m
71.02.02b.03 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m
71.02.02b.03a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m
71.02.02b.04 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m
71.02.02b.05 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m
71.02.02b.05a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m
71.02.02b.06 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m
71.02.02b.07 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono
71.02.02b.08 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m
71.02.02b.08a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m
71.02.02b.08b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono
71.02.02b.09 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m
71.02.02b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m
71.02.02b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m
71.02.02b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m
71.02.02b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m
71.02.02b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m
71.02.02b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m
71.02.02b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m
71.02.02b.18 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m
Help on  Strunz Class: Strunz Class: 09.EC.20 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
09.EC.20 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m
09.EC.20 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m
09.EC.20 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m
09.EC.20 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m
09.EC.20 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m
09.EC.20 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono
09.EC.20 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m
09.EC.20 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m
09.EC.20 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m
09.EC.20 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m
09.EC.20 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m
09.EC.20 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m
09.EC.20 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m
09.EC.20 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m
09.EC.20 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m
09.EC.20 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m
09.EC.20 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m
09.EC.20 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m
09.EC.20 Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m
09.EC.20 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m
09.EC.20 Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono
09.EC.20 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m
09.EC.20 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m
09.EC.20 Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m

Other Hendricksite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Hendricksite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: 71.02.02b.06 Strunz No: 09.EC.20





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