Scarbroite Mineral Data

Scarbroite Mineral Data +

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Scarbroite Information

Chemical Formula:

Al5(CO3)(OH)13·5(H2O)

Composition:

Molecular Weight = 506.09 gm

Aluminum 26.66 % Al 50.37 % Al₂O₃

Hydrogen 4.58 % H 40.94 % H₂O

Carbon 2.37 % C 8.70 % CO₂

Oxygen 66.39 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al₅(CO₃)(OH)₁₃·5(H₂O)

Environment:

In vertical fissures in sandstone.

IMA Status:

Approved IMA 1960

Locality:

South Bay, Scarborough, England. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Scarbroite Image

Images:

Scarbroite

Comments: White earthy scarbroite.
Location: South Bay, Scarborough, North Yorkshire, England, UK. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Scarbroite Hydroscarbroite

Comments: White to tan nodular hydroscarbroite intermixed with scarbroite in sandstone.
Location: Weston Favell, Northamptonshire, England. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Scarbroite Crystallography

Axial Ratios:

a:b:c =0.668:1:1.7788

Cell Dimensions:

a = 9.94, b = 14.88, c = 26.47, Z = 9; alpha = 98.7°, beta = 96.5°, gamma = 89° V = 3,844.59 Den(Calc)= 1.97

Crystal System:

TriclinicSpace Group: P1 or P1

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

By Intensity(I/I_o): 8.64(1), 1.43(0.8), 4.32(0.8),

Physical Properties of Scarbroite

Color:

White.

Density:

1.85 - 2.05, Average = 1.95

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Pseudo Rhombohedral - Crystals show a rhombohedral outline.

Hardness:

1-2 - Between Talc and Gypsum

Streak:

white

Optical Properties of Scarbroite

Gladstone-Dale:

CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2584,KPDmeas= 0.261,KC= 0.2618

Optical Data:

Biaxial (?), b=1.509

Calculated Properties of Scarbroite

Electron Density:

r_electron=2.02 gm/cc
note: r_Scarbroite=1.95 gm/cc.

Fermion Index

Fermion Index = 0.00058
Boson Index = 0.99942

Photoelectric:

PE_Scarbroite= 0.92 barns/electron
U=PE_Scarbroite x r_electron= 1.87 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Scarbroite is Not Radioactive

Scarbroite Classification

Dana Class:

16b.7.8.1 (16b)Carbonates - Hydroxyl or Halogen

(16b.7)Dana Type

(16b.7.8)Dana Group

16b.7.8.1 Scarbroite Al5(CO3)(OH)13·5(H2O) P1 or P1 Tri

Strunz Class:

V/E.04-10 V - Nitrates, Carbonates and Borates

V/E - Water-bearing carbonates with unfamiliar anions

V/E.04 - Scarbroite - Para-alumohydrocalcite series

V/E.04-10 Scarbroite Al5(CO3)(OH)13·5(H2O) P1 or P1 Tri

V/E.04-20 Hydroscarbroite Al14(CO3)3(OH)36·n(H2O) Tri

V/E.04-30 Alumohydrocalcite CaAl2(CO3)2(OH)4·3(H2O) P1 1

V/E.04-40 Para-alumohydrocalcite CaAl2(CO3)2(OH)4·6(H2O) Tri

Other Scarbroite Information

References:

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

See Also:

Links to other databases for Scarbroite :
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

Search for Scarbroite using:

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

Visit our Advertisers for Scarbroite :
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 Scarbroite Mineral Data :

Ask about Scarbroite 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 Scarbroite Specimen Label here :

Scarbroite

Al5(CO3)(OH)13·5(H2O)
Dana No: 16b.7.8.1 Strunz No: V/E.04-10
Locality:

Notes: