Hendricksite Mineral Data + Say HENDRICKSITE

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.
 

Hendricksite Image

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Hendricksite   Celsian

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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Hendricksite

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 - PrismaticH-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),
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Robert J L , Gasperin M , Tschermaks Mineralogische und Petrographische Mitteilungen , 34 (1985) p.1-14, Crystal structure refinement of hendricksite, a Zn- and Mn-rich trioctahedral, potassium mica: a contribution to the crystal chemistry of zinc-bearing minerals, Locality: Franklin Furnace, New Jersey, USA, Note: polytype 1M

 

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 Diaphaniety: Diaphaniety: 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
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:

relectron=3.12 gm/cc
note: rHendricksite =3.20 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01744
Boson Index = 0.98256
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)

Estimated Radioactivity from Hendricksite - barely detectable

 

Hendricksite Classification
Help on Dana Class: Dana Class: 71.2.2b.6 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.2)with 2:1 Layers
  (71.2.2b)Mica Group (Biotite subgroup)
 
71.2.2b.1 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m
 
71.2.2b.1a Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m
 
71.2.2b.1b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m
 
71.2.2b.2 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m
 
71.2.2b.3 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m
 
71.2.2b.3a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m
 
71.2.2b.4 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m
 
71.2.2b.5 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m
 
71.2.2b.5a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m
 
71.2.2b.6 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m
 
71.2.2b.7 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono
 
71.2.2b.8 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m
 
71.2.2b.8a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m
 
71.2.2b.8b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono
 
71.2.2b.9 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m
 
71.2.2b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m
 
71.2.2b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m
 
71.2.2b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m
 
71.2.2b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m
 
71.2.2b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m
 
71.2.2b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m
 
71.2.2b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m
 
71.2.2b.17 IMA2004-049! NaMg3(AlSi3)O10(OH)2 C 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/H.11-100 VIII - Silicates
  VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups
  VIII/H.11 - Mica group, Biotite series
 
VIII/H.11-00* Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m
 
VIII/H.11-10 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m
 
VIII/H.11-20 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m
 
VIII/H.11-30 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m
 
VIII/H.11-35 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m
 
VIII/H.11-40 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m
 
VIII/H.11-50 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m
 
VIII/H.11-60 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m
 
VIII/H.11-70 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m
 
VIII/H.11-80 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m
 
VIII/H.11-90 Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m
 
VIII/H.11-100 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m
 
VIII/H.11-102 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m
 
VIII/H.11-105 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m
 
VIII/H.11-110 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m
 
VIII/H.11-120 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m
 
VIII/H.11-130 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m
 
VIII/H.11-140 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m
 
VIII/H.11-150 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m
 
VIII/H.11-160 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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Hendricksite

K(Zn,Mg,Mn)3Si3AlO10(OH)2
Dana No: 71.2.2b.6 Strunz No: VIII/H.11-100
Locality:

 

Notes:

 
 
   
 
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