Spinel  Mineral Data

Spinel Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Spinel Information

Help on Chemical  Formula: Chemical Formula: MgAl2O4
Help on Composition: Composition: Molecular Weight = 142.27 gm
   Magnesium  17.08 %  Mg   28.33 % MgO
   Aluminum   37.93 %  Al   71.67 % Al2O3
   Oxygen     44.98 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgAl2O4
Help on Environment: Environment: Metamorphic mineral found in limestone and dolomite marbles and very-low silica and alkali igneous rocks (e.g. peridotites).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1546
Help on Locality: Locality: Gem gravels of Sri Lanka and other notable locations. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Of uncertain origin, possibly derived from Latin, spina, for "thorn" in allusion to sharply-pointed crystals.
Help on Name Pronunciation: Name Pronunciation: Spinel Say SPINEL
Help on Synonym: Synonym: Balas ruby - Red
  ICSD 79000
  PDF 21-1152
  Rubicelle
  Ruby spinal
 

Spinel Image

Click Here for Larger Spinel Image in a New Browser Window Images:
Click Here for Larger Spinel Image

Spinel

Comments: Spinel on white marble.
Location: Mogok, Myanmar. Scale: 2.2 x 1.5 cm.
© Fabre Minerals

Spinel Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 8.08, Z = 8; V = 527.51 Den(Calc)= 3.58
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.436(1), 2.021(0.7), 1.429(0.6),
Help on Forms: 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) ( 1 1 1)

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

Click Here for Large Spinel Structure Window 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


Peterson R C , Lager G A , Hitterman R L , American Mineralogist , 76 (1991) p.1455-1458, A time-of-flight neutron powder diffraction study of MgAl2O4 at temperatures, up to 1273 K, sample W, T = 293 K

View Additional jPOWD Structure files for Spinel
[1] [10] [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [11] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [12] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [13] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [14] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [15] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [16] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169] [17] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179] [18] [180] [181] [182] [183] [184] [185] [186] [187] [188] [189] [19] [190] [191] [192] [193] [194] [195] [196] [197] [198] [199] [2] [20] [200] [201] [202] [203] [204] [205] [206] [207] [208] [209] [21] [210] [211] [212] [213] [214] [215] [216] [217] [218] [219] [22] [220] [221] [222] [223] [224] [225] [226] [227] [228] [229] [23] [230] [231] [232] [233] [234] [235] [236] [237] [238] [239] [24] [240] [241] [242] [243] [244] [245] [246] [247] [248] [249] [25] [250] [251] [252] [253] [254] [255] [256] [257] [258] [259] [26] [260] [261] [262] [263] [264] [265] [266] [267] [268] [269] [27] [270] [271] [272] [273] [274] [275] [276] [277] [278] [279] [28] [280] [281] [282] [283] [284] [285] [286] [287] [288] [289] [29] [290] [291] [292] [293] [294] [295] [296] [297] [298] [299] [3] [30] [300] [301] [302] [303] [304] [305] [306] [307] [308] [309] [31] [310] [311] [312] [313] [314] [315] [316] [317] [318] [319] [32] [320] [321] [322] [323] [324] [325] [326] [327] [328] [329] [33] [330] [331] [332] [333] [334] [335] [336] [337] [338] [339] [34] [340] [341] [342] [343] [344] [345] [346] [347] [348] [349] [35] [350] [351] [352] [353] [354] [355] [356] [357] [358] [359] [36] [360] [361] [362] [363] [364] [365] [366] [367] [368] [369] [37] [370] [371] [372] [373] [374] [375] [376] [377] [378] [379] [38] [380] [381] [382] [383] [384] [385] [386] [387] [388] [389] [39] [390] [391] [392] [393] [394] [395] [396] [397] [398] [399] [4] [40] [400] [401] [402] [403] [404] [405] [406] [407] [408] [409] [41] [410] [411] [412] [413] [414] [415] [416] [417] [418] [419] [42] [420] [421] [422] [423] [424] [425] [426] [427] [428] [429] [43] [430] [431] [432] [433] [434] [435] [436] [437] [438] [439] [44] [440] [441] [442] [443] [444] [445] [446] [447] [448] [449] [45] [450] [451] [452] [453] [454] [455] [456] [457] [458] [459] [46] [460] [461] [462] [463] [464] [465] [466] [467] [468] [469] [47] [470] [471] [472] [473] [474] [475] [476] [477] [478] [479] [48] [480] [481] [482] [483] [484] [485] [486] [487] [488] [489] [49] [490] [491] [492] [493] [494] [495] [496] [497] [498] [499] [5] [50] [500] [501] [502] [503] [504] [505] [506] [507] [508] [509] [51] [510] [511] [512] [513] [514] [515] [516] [517] [518] [519] [52] [520] [521] [522] [523] [524] [53] [54] [55] [56] [57] [58] [59] [6] [60] [61] [62] [63] [64] [65] [66] [67] [68] [69] [7] [70] [71] [72] [73] [74] [75] [76] [77] [78] [79] [8] [80] [81] [82] [83] [84] [85] [86] [87] [88] [89] [9] [90] [91] [92] [93] [94] [95] [96] [97] [98] [99]
 

Physical Properties of Spinel

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Red, Blue, Green, Brown.
Help on Density: Density: 3.57 - 3.72, Average = 3.64
Help on Diaphaneity: Diaphaneity: Transparent to translucent to opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 8 - Topaz
Help on Luminescence: Luminescence: Sometimes Fluorescent, Short UV=red, Long UV=red.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: grayish white
 

Optical Properties of Spinel

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2123,KPDmeas= 0.2085,KC= 0.205
Ncalc = 1.73 - 1.76
Help on Optical Data: Optical Data: Isotropic, n=1.72-1.8.
 

Calculated Properties of Spinel

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.59 gm/cc
note: Specific Gravity of Spinel =3.65 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESpinel = 1.48 barns/electron
U=PESpinel x rElectron Density= 5.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Spinel is Not Radioactive
 

Spinel Classification

Help on  Dana Class: Dana Class: 07.02.01.01 (07)Multiple Oxides
  (07.02)(A+ B++)2 X4 Spinel group
  (07.02.01)(Aluminum subgroup)
 
07.02.01.01 Spinel MgAl2O4 F d3m 4/m 3 2/m
 
07.02.01.02 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m
 
07.02.01.03 Hercynite FeAl2O4 F d3m 4/m 3 2/m
 
07.02.01.04 Gahnite ZnAl2O4 F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 04.BB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.B - Metal:Oxygen = 3:4 and similar
  04.BB -With only medium-sized cations
 
04.BB.05 Cochromite (Co,Ni,Fe)(Cr,Al)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m
 
04.BB.05 Magnetite FeFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Gahnite ZnAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Chromite FeCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m
 
04.BB.05 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Coulsonite FeV2O4 F d3m 4/m 3 2/m
 
04.BB.05 Hercynite FeAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesiochromite MgCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m
 
04.BB.05 Manganochromite (Mn,Fe)(Cr,V)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m
 
04.BB.05 Nichromite (Ni,Co,Fe)(Cr,Fe,Al)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Spinel MgAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Zincochromite ZnCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m
 

Other Spinel Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Spinel :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Amethyst Galleries' Mineral Gallery
4 - Athena
5 - CalTech Mineral Spectroscopy
6 - Franklin Minerals(Dunn)
7 - Franklin Minerals(Palache)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - HyperPhysics
14 - MinDAT
15 - Mineral and Gemstone Kingdom
16 - Mineralienatlas (Deutsch)
17 - NSDL Reciprocal Net (JAVA)
18 - Online Mineral Museum
19 - QUT Mineral Atlas
20 - Ruff.Info
21 - Tradeshop.com - The Rainbow of Gems
22 - University of Colorado - Mineral Structure Data
23 - University of Texas at Austin
24 - theimage

Search for Spinel using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Spinel :

A Bijoux Google Search for Spinel
Adam's Minerals Google Search for Spinel
Cape Minerals Google Search for Spinel
Dakota Matrix Minerals Google Search for Spinel
Excalibur Mineral Corp. Google Search for Spinel
Exceptional Minerals Google Search for Spinel
John Betts Fine Minerals Search for Spinel
McDougall Minerals Google Search for Spinel
Mineral News Website Link
Rock and Mineral Shows Google Search for Spinel
Weinrich Minerals, Inc. Google Search for Spinel

Ask about Spinel 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 Espaņol

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

Spinel

MgAl2O4
Dana No: 07.02.01.01 Strunz No: 04.BB.05
Locality:

 

Notes: