Geode Quartz

UNB-2016-0437Minerals » Silicates

Description

*Sample is missing, no images associate with this sample. Quartz (SiO2) can come in various colours from purple to white and even colourless. Lustre is vitreous or greasy and streak is white. Hardness is 7. Quartz usually occurs as prismatic crystals that a striated crosswise and are usually terminated by double rhombohedrons. Quartz can also be granular, disseminated or massive.

Specifications

Object name	Geode Quartz
ID	UNB-2016-0437
Legal status	Permanent collection
Category	Mineral
Classification	Mineral group: Silicates
Composition	Ca2(Al,Fe)3(SiO4)3(OH) (Al,Fe2+,Fe3+Li,Mg,Mn,Ni)5−6(Al,Fe3+,Si)4(O,OH)18 K(Fe,Mg)3AlSi3O10(OH)2 BaTiSi3O9 (Mg,Fe)2Al3(Si5AlO18) (Ca,Fe,Mg)3Al2BO3Si4O12(OH) Be3Al2(Si6O18) MgSiO3 (Mg,Fe2+)5Al(Si3Al)O10(OH)8 Na2Fe2+5[Si12O30] (Na,Ca)Fe3+Si2O6 NaFe3+Si2O6 NaFe3+Si2O6 A0-1B2C5T8O22(OH,F,Cl)2 (Al,Fe)SiO4 Various (e.g., Muscovite - KAl2(AlSi3O10)(OH)2) Al2Si2O5(OH)4 Be3Al2(Si6O18) K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 NaAlSi2O6 Mg2Si2O6 Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 Na15Ca6(Fe2+,Mn2+)3Zr3Si25O733(CO3) CaMgSi2O6 CaFeSi2O6 Ca2Al3(SiO4)3(OH) CaSiO3 Ca2(Mg,Fe2+,Fe3+,Al)5(Si,Al)8O22(OH)2 (Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 Na2AlSi3O8·H2O Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2 (Na,Ca)(Fe,Mg,Li,Al)3Al6(BO3)3(Si6O18)(OH)4 Ca2Al3(SiO4)3(OH) LiAlSi2O6 MnSiO3 (Mn,Fe)SiO3 ADSi2O6 Ca2Al(AlSi3O10)(OH)2·H2O (Ca,Na)(Mg,Fe)Si2O6 NaCa2Si3O8(OH)2H2O LiAlSi4O10 NaAl2(AlSi3O10)(OH)2 Mg2Mg5Si8O22(OH)2 D3[Si2O5](OH)4 Mg3(Si2O5)(OH)4 Be₃Al₂(SiO₃)₆ A(D3)G6(T6O18)(BO3)3X3Z (Mg,Al)8(Al,Si)6O20 SiO2 with variable amounts of water KAl2(AlSi3O10)(F,OH)2 Al2(SiO4)O
Origin	Alnif, Morocco
Pieces	2
Partial	No
Measurements	17.2cm x 12.1cm x 14.2cm 17cm x 15.8cm x 11.1cm

Map of Origin

Publications

Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.