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Datolite Mineral Data + |
General Datolite Information |
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| CaBSiO4(OH) | |||
| Molecular Weight = 159.98 gm | |||
| Calcium 25.05 % Ca 35.05 % CaO | |||
| Silicon 17.56 % Si 37.56 % SiO2 | |||
| Boron 6.76 % B 21.76 % B2O3 | |||
| Hydrogen 0.63 % H 5.63 % H2O | |||
| Oxygen 50.00 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| CaB(SiO4)(OH) | |||
| Secondary mineral in basic igneous rocks. | |||
| Valid Species (Pre-IMA) 1806 | |||
| Diabases of the Connecticut River valley, USA. Link to MinDat.org Location Data. | |||
| From the Greek, dateisthai, meaning "to divide," because granular aggregates crumble readily. | |||
| ICSD 22026 | |||
| PDF 36-429 | |||
Datolite Image | |||
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Datolite Crystallography |
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| a:b:c =1.2643:1:0.6321 | |||
| a = 9.66, b = 7.64, c = 4.83, Z = 4; beta = 90.15° V = 356.46 Den(Calc)= 2.98 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 3.114(1), 2.855(0.65), 2.189(0.6), | |||
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Physical Properties of Datolite |
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| None | |||
| Brown, Colorless, Yellow, White, Light green. | |||
| 2.8 - 3, Average = 2.9 | |||
| Transparent to translucent | |||
| Brittle - Generally displayed by glasses and most non-metallic minerals. | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Porcelainous - Fine-grained, translucent massive material like broken china | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 5.5 - Knife Blade | |||
| None. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Datolite |
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| CI meas= -0.03 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2181,KPDmeas= 0.2241,KC= 0.2177 |
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| Biaxial (-), a=1.626, b=1.653-1.654, g=1.67, bire=0.0440, 2V(Calc)=72-74, 2V(Meas)=74. Dispersion none. | |||
| colorless. | |||
| colorless. | |||
| colorless. | |||
Calculated Properties of Datolite |
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relectron=2.98 gm/cc |
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| Fermion Index = 0.02222 Boson Index = 0.97778 |
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PEDatolite = 3.83 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Datolite is Not Radioactive |
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Datolite Classification |
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| 54.2.1a.1 (54)Nesosilicate Borosilicates and Some Beryllosilicates | |||
| (54.2)with B in [4] coordination | |||
| (54.2.1a)Datolite group (Datolite series) | |||
| VIII/B.29-10 VIII - Silicates | |||
| VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, with beryllium and boron | |||
| VIII/B.29 - Datolite/Gadolinite group | |||
Other Datolite Information |
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| NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68) | |||
| Links to other databases for Datolite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Amethyst Galleries' Mineral Gallery 6 - Applied Mineralogy 7 -Athena 8 - Crocoite.com Mineral Locations 9 - EUROmin Project 10 - Franklin Minerals(Dunn) 11 - Franklin Minerals(Palache) 12 - Glendale Community College 13 -Google Images 14 -Google Scholar 15 -Handbook of Mineralogy (MinSocAm) 16 -Handbook of Mineralogy (UofA) 17 -MinDAT 18 -MinMax(Deutsch) 19 -MinMax(English) 20 -Mineralienatlas (Deutsch) 21 - Minerals of Wisconsin 22 -QUT Mineral Atlas 23 - WWW-MINCRYST 24 - YupRocks 25 -theimage 26 -École des Mines de Paris Search for Datolite using: Visit our Advertisers for Datolite : Translate Datolite Mineral Data : Ask about Datolite here : Print or Cut-and-Paste your Datolite Specimen Label here :
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