Lannonite Mineral Data

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.

Name Pronunciation:

Lannonite + Pronunciation

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:

Tetragonal Space 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
Ncalc = 1.52 - 1.54

Optical Data:

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

Calculated Properties of Lannonite

Electron Density:

Bulk Density (Electron Density)=2.28 gm/cc
note: Specific Gravity of Lannonite =2.22 gm/cc.

Fermion Index:

Fermion Index = 0.0040912578
Boson Index = 0.9959087422

Photoelectric:

PE_Lannonite= 2.25 barns/electron
U=PE_Lannonite x rElectron Density= 5.13 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lannonite is Not Radioactive

Lannonite Classification

Dana Class:

31.09.14.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.09)where (A+ B++) (XO4) Zqï¿½x(H2O)

(31.09.14)Dana Group

31.09.14.01 Lannonite HCa4Mg2Al4(SO4)8F9•32(H2O) Unk Tetra

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

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 - 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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Print or Cut-and-Paste your Lannonite Specimen Label here :

Lannonite

HCa4Mg2Al4(SO4)8F9•32(H2O)
Dana No: 31.09.14.01 Strunz No: 07.DF.40
Locality:

Notes:

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