Palermoite Mineral Data

Palermoite Mineral Data +

[Current Minerals] [Order Status] [Policies] [e-Bay Items]
B & L Minerals, Fine Mineral specimens for sale for collectors of all levels

General Palermoite Information

Chemical Formula:

(Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4

Composition:

Molecular Weight = 653.48 gm

Sodium 1.76 % Na 2.37 % Na₂O

Strontium 10.06 % Sr 11.89 % SrO

Lithium 1.59 % Li 3.43 % Li₂O

Calcium 1.53 % Ca 2.15 % CaO

Aluminum 16.52 % Al 31.21 % Al₂O₃

Phosphorus 18.96 % P 43.44 % P₂O₅

Hydrogen 0.62 % H 5.51 % H₂O

Oxygen 48.97 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Sr_0.75Ca_0.25Li_1.5Na_0.5Al₄(PO₄)₄(OH)₄

Environment:

In cavities in a pegmatite.

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

Palermon No. 1 mine, North Groton, New Hampshire, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 4262

PDF 18-950

Palermoite Image

Images:

Palermoite

Comments: Less than 1cm, vug with micro crystals of palermoite.
Location: Palermo mine, New Hampshire, USA. Scale: Picture size 0.5 cm.
© John Veevaert

Palermoite Crystallography

Axial Ratios:

a:b:c =0.4615:1:0.7291

Cell Dimensions:

a = 7.315, b = 15.849, c = 11.556, Z = 4; V = 1,339.75 Den(Calc)= 3.24

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: I mmm

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

By Intensity(I/I_o): 3.089(1), 4.36(0.64), 3.129(0.6),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 1 1 0] [ 0 1 0] [ 1 1 1] [ 0 1 1] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Moore P B , Araki T , American Mineralogist , 60 (1975) p.460-465, Palermoite, SrLi2[Al4(OH)4(PO4)4]: Its atomic arrangement and relationship to, carminite, Pb2[Fe4(OH)4(AsO4)4]

Physical Properties of Palermoite

Cleavage:

[100] Perfect, [001] Distinct

Color:

Colorless, White.

Density:

3.22

Diaphaniety:

Transparent

Fracture:

Brittle - Splintery - Brittle fracture leaving splintery fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

5.5 - Knife Blade

Luster:

Vitreous - Adamantine

Streak:

white

Optical Properties of Palermoite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1968,KPDmeas= 0.198,KC= 0.1996

Optical Data:

Biaxial (-), a=1.627, b=1.642, g=1.644, bire=0.0170, 2V(Calc)=38, 2V(Meas)=20.

Calculated Properties of Palermoite

Electron Density:

r_electron=3.15 gm/cc
note: r_Palermoite=3.22 gm/cc.

Fermion Index

Fermion Index = 0.00849
Boson Index = 0.99151

Photoelectric:

PE_Palermoite= 12.51 barns/electron
U=PE_Palermoite x r_electron= 39.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Palermoite is Not Radioactive

Palermoite Classification

Dana Class:

41.7.1.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.7)where (A B)m (XO4)4 Zq

(41.7.1)Dana Group

41.7.1.1 Palermoite (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4 I mmm 2/m 2/m 2/m

41.7.1.2 Bertossaite Li2CaAl4(PO4)4(OH)4 Imaa,Iaa2 Ortho

Strunz Class:

VII/B.28-20 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.28 - Carminite series

VII/B.28-10 Bertossaite Li2CaAl4(PO4)4(OH)4 Imaa,Iaa2 Ortho

VII/B.28-20 Palermoite (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4 I mmm 2/m 2/m 2/m

VII/B.28-30 Attakolite (Ca,Sr)Mn(Al,Fe)4[(Si,P)O4]H(PO4)3(OH)4 C 2/m 2/m

VII/B.28-35 Sewardite! CaFe2(AsO4)2(OH)2 C ccm 2/m 2/m 2/m

VII/B.28-40 Carminite PbFe2(AsO4)2(OH)2 C ccm 2/m 2/m 2/m

VII/B.28-60 Leningradite PbCu3(VO4)Cl2 I bam 2/m 2/m 2/m

VII/B.28-70 Namibite CuBi2(VO4)O2 C 2/m,Cm,C 2 Mono

VII/B.28-80 Paganoite! (Ni,Co)BiAsO5 P1 1

Other Palermoite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Palermoite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Palermoite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Palermoite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Palermoite Mineral Data :

Ask about Palermoite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Palermoite

(Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4
Dana No: 41.7.1.1 Strunz No: VII/B.28-20
Locality:

Notes: