Lannonite Mineral Data

Lannonite Mineral Data +

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General Lannonite Information

Chemical Formula:

HCa4Mg2Al4(SO4)8F9·32(H2O)

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

Empirical Formula:

HCa₄Mg₂Al₄(SO₄)₈F₉·32(H₂O)

Environment:

Post mining mineral in deposits containing oxidizable sulfides and fluorine bearing minerals.

IMA Status:

Approved IMA 1983

Locality:

Lone Pine mine, Catron County, New Mexico. Link to MinDat.org Location Data.

Name Origin:

Named after Dan Lannon, who staked important claims at the locality in the late 1800's.

Lannonite Image

Images:

Lannonite

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

Axial Ratios:

a:c = 1:4.09502

Cell Dimensions:

a = 6.84, c = 28.01, Z = 1; V = 1,310.47 Den(Calc)= 2.32

Crystal System:

TetragonalSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 13.98(1), 3.456(0.7), 4.84(0.7),

Physical Properties of Lannonite

Color:

White.

Density:

2.22

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

2 - Gypsum

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Lannonite

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

Optical Data:

Uniaxial (+), w=1.46, e=1.478, bire=0.0180.

Calculated Properties of Lannonite

Electron Density:

r_electron=2.28 gm/cc
note: r_Lannonite=2.22 gm/cc.

Fermion Index

Fermion Index = 0.00409
Boson Index = 0.99591

Photoelectric:

PE_Lannonite= 2.25 barns/electron
U=PE_Lannonite x r_electron= 5.13 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lannonite is Not Radioactive

Lannonite Classification

Dana Class:

31.9.14.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.9)where (A+ B++) (XO4) Zq·x(H2O)

(31.9.14)Dana Group

31.9.14.1 Lannonite HCa4Mg2Al4(SO4)8F9·32(H2O) Unk Tetra

Strunz Class:

VI/D.14-30 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium and very big size

VI/D.14 - Metavoltine - Slavikite series

VI/D.14-10 Metavoltine K4Na4(Fe,Zn)Fe6(SO4)12O2·20(H2O) P 3 3

VI/D.14-20 Motukoreaite Na2Mg38Al24(CO3)13(SO4)8(OH)108·56(H2O) R 3m 3 2/m

VI/D.14-22 Nikischerite! NaFe6Al3(SO4)2(OH)18(H2O)12 R 3 3

VI/D.14-23 Shigaite Mn7Al4(SO4)2(OH)22·8(H2O) R 3 3

VI/D.14-25 Wermlandite (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18·12(H2O) P 3c1 3 2/m

VI/D.14-30 Lannonite HCa4Mg2Al4(SO4)8F9·32(H2O) Unk Tetra

VI/D.14-40 Slavikite NaMg2Fe5(SO4)7(OH)6·33(H2O) R 3 3

Other Lannonite Information

References:

NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Lannonite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Lannonite

HCa4Mg2Al4(SO4)8F9·32(H2O)
Dana No: 31.9.14.1 Strunz No: VI/D.14-30
Locality:

Notes: