Mineralogy Database

Lannonite Mineral Data

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General Lannonite Information

Help on Chemical  Formula: Chemical Formula: HCa4Mg2Al4(SO4)8F9•32(H2O)
Help on Composition: Composition: Molecular Weight = 1,833.84 gm
   Calcium     8.74 %  Ca   12.23 % CaO
   Magnesium   2.65 %  Mg    4.40 % MgO
   Aluminum    5.89 %  Al   11.12 % Al2O3
   Hydrogen    3.57 %  H    31.93 % H2O
   Sulfur     13.99 %  S    34.93 % SO3
   Oxygen     55.84 %  O
   Fluorine    9.32 %  F     9.32 % F
                -   %   F    -3.93 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: HCa4Mg2Al4(SO4)8F9•32(H2O)
Help on Environment: Environment: Post mining mineral in deposits containing oxidizable sulfides and fluorine bearing minerals.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Lone Pine mine, Catron County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Dan Lannon, who staked important claims at the locality in the late 1800's.
Help on Name Pronunciation: Name Pronunciation: Lannonite + Pronunciation Say LANNONITE

Lannonite Image

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Comments: White crusts of lannonite on matrix.
Location: Silver City, Grant County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lannonite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.09502
Help on Cell Dimensions: Cell Dimensions: a = 6.84, c = 28.01, Z = 1; V = 1,310.47 Den(Calc)= 2.32
Help on Crystal System: Crystal System: Tetragonal Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 13.98(1), 3.456(0.7), 4.84(0.7),

Physical Properties of Lannonite

Help on Color: Color: White.
Help on Density: Density: 2.22
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white

Optical Properties of Lannonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.09 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.13 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2022,KPDmeas= 0.2113,KC= 0.2323
Ncalc = 1.52 - 1.54
Help on Optical Data: Optical Data: Uniaxial (+), w=1.46, e=1.478, bire=0.0180.

Calculated Properties of Lannonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.28 gm/cc
note: Specific Gravity of Lannonite =2.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040912578
Boson Index = 0.9959087422
Help on Photoelectric: Photoelectric: PELannonite = 2.25 barns/electron
U=PELannonite x rElectron Density= 5.13 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lannonite is Not Radioactive

Lannonite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.09)where (A+ B++) (XO4) Zq�x(H2O)
  (31.09.14)Dana Group Lannonite HCa4Mg2Al4(SO4)8F9•32(H2O) Unk Tetra
Help on  Strunz Class: Strunz Class: 07.DF.40 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DF -With large and medium-sized cations
07.DF.40 Lannonite HCa4Mg2Al4(SO4)8F9•32(H2O) Unk Tetra
07.DF.40 Vlodavetsite! AlCa2(SO4)2F2Cl•4(H2O) I 4/m 4/m

Other Lannonite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lannonite :
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: Strunz No: 07.DF.40





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