[How the Club Works] [Memberships - Junior, Deluxe , and Platinum] [FAQ] [Past Minerals] Join the Club - Junior, Deluxe and Platinum Memberships Available High Quality Minerals Sent to Your Home or School Each Month Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals General Hastingsite InformationNaCa2(Fe++4Fe+++)Si6Al2O22(OH)2 |
Molecular Weight = 990.86 gm |
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Sodium 2.32 % Na 3.13 % Na2O |
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Calcium 8.09 % Ca 11.32 % CaO |
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Aluminum 5.45 % Al 10.29 % Al2O3 |
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Iron 28.18 % Fe 29.00 % FeO / 8.06 % Fe2O3 |
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Silicon 17.01 % Si 36.38 % SiO2 |
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Hydrogen 0.20 % H 1.82 % H2O |
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Oxygen 38.75 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
NaCa2Fe2+4Fe3+(Si6Al2O22)(OH)2 |
Nepheline-syenite rocks. |
Valid Species (Pre-IMA) 1896 |
Dungannon, Hastings Co., Ontario, Canada. Link to MinDat.org Location Data. |
Named after its locality. |
Hastingsite + Pronunciation |
ICSD 200114 |
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PDF 20-378 |
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Hastingsite Crystallographya:b:c =0.5497:1:0.2937 |
a = 9.912, b = 18.03, c = 5.296, Z = 2; beta = 103.946° V = 918.57 Den(Calc)= 3.58 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
By Intensity(I/Io): 8.43(1), 3.13(0.7), 2.71(0.6), |
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| Physical Properties of Hastingsite{110} Perfect, {110} Perfect |
Dark green, Black. |
3.17 - 3.59, Average = 3.38 |
Transparent to translucent |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Tabular - Form dimensions are thin in one direction. |
6 - Orthoclase |
Non-fluorescent. |
Vitreous (Glassy) |
greenish gray |
| Optical Properties of HastingsiteCI meas= 0.046 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.1 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1916,KPDmeas= 0.2029,KC= 0.2128 Ncalc = 1.67 - 1.76 Biaxial (-), a=1.669-1.68, b=1.682-1.695, g=1.684-1.705, bire=0.0150-0.0250, 2V(Calc)=42-76, 2V(Meas)=40-81. Dispersion r > v distinct. |
dull yellow, yellow, or pale greenish brown. |
liver brown, deep greenish blue, or dark greenish brown. |
greenish yellow, deep olive green, or dark blue. |
| Calculated Properties of HastingsiteBulk Density (Electron Density)=3.31 gm/cc |
note: Specific Gravity of Hastingsite =3.38 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEHastingsite = 10.24 barns/electron |
U=PEHastingsite x rElectron Density= 33.88 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Hastingsite is Not Radioactive | Hastingsite Classification66.01.03a.15 (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.01)with P=2 amphibole configuration |
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(66.01.03a)Group 2, the calcic amphiboles |
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09.DE.10 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family |
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| Other Hastingsite InformationNAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) |
Links to other databases for Hastingsite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - Franklin Minerals(Palache) 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - MinMax(Deutsch) 13 - MinMax(English) 14 - Mineralienatlas (Deutsch) 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - WWW-MINCRYST Search for Hastingsite using: Visit our Advertisers for Hastingsite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Hastingsite Mineral Data : Ask about Hastingsite here : Print or Cut-and-Paste your Hastingsite Specimen Label here :
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