Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Nianzha deposit, Rinbung Co. (Renbu Co.), Xigazê Prefecture (Rikaze Prefecture; Shigatse Prefecture), Tibet, Chinai
Regional Level Types
Nianzha depositDeposit
Rinbung Co. (Renbu Co.)County
Xigazê Prefecture (Rikaze Prefecture; Shigatse Prefecture)Prefecture
TibetAutonomous Region
ChinaCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
29° 15' 0'' North , 90° 7' 59'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Nianzha is a large orogenic Au deposit (∼25 t @ 3.08 g/t Au) and located in the contact fault zone between ultramafic rocks and diorite in the Renbu tectonic mélange of southern Tibet.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


16 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Albite
Formula: Na(AlSi3O8)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Calcite
Formula: CaCO3
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Chlorite Group'
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Galena
Formula: PbS
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Gold
Formula: Au
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Gold var. Electrum
Formula: (Au,Ag)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Hematite
Formula: Fe2O3
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Hornblende'
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'K Feldspar'
Formula: KAlSi3O8
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Limonite'
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Monazite'
Formula: REE(PO4)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Orthoclase
Formula: K(AlSi3O8)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Pyrite
Formula: FeS2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Quartz
Formula: SiO2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Quartz var. Milky Quartz
Formula: SiO2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Quartz var. Smoky Quartz
Formula: SiO2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Rutile
Formula: TiO2
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Titanite
Formula: CaTi(SiO4)O
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.
Zircon
Formula: Zr(SiO4)
Reference: Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
var. Electrum1.AA.05(Au,Ag)
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var. Milky Quartz4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Group 9 - Silicates
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Albite9.FA.35Na(AlSi3O8)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30K(AlSi3O8)
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
'Chlorite Group'-
'Hornblende'-
'K Feldspar'-KAlSi3O8
'Limonite'-
'Monazite'-REE(PO4)
'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H ApatiteCa5(PO4)3(Cl/F/OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O AlbiteNa(AlSi3O8)
O Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O ApatiteCa5(PO4)3(Cl/F/OH)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O K FeldsparKAlSi3O8
O MagnetiteFe2+Fe23+O4
O Quartz var. Milky QuartzSiO2
O MonaziteREE(PO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O OrthoclaseK(AlSi3O8)
O Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
O QuartzSiO2
O RutileTiO2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
O Serpentine SubgroupD3[Si2O5](OH)4
O Quartz var. Smoky QuartzSiO2
O TitaniteCaTi(SiO4)O
O ZirconZr(SiO4)
FFluorine
F Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F ApatiteCa5(PO4)3(Cl/F/OH)
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al K FeldsparKAlSi3O8
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al OrthoclaseK(AlSi3O8)
Al Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si AlbiteNa(AlSi3O8)
Si Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si K FeldsparKAlSi3O8
Si Quartz var. Milky QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OrthoclaseK(AlSi3O8)
Si Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Si QuartzSiO2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4
Si Quartz var. Smoky QuartzSiO2
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P MonaziteREE(PO4)
SSulfur
S GalenaPbS
S PyriteFeS2
ClChlorine
Cl Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
K K FeldsparKAlSi3O8
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
ZrZirconium
Zr ZirconZr(SiO4)
AgSilver
Ag Gold var. Electrum(Au,Ag)
AuGold
Au GoldAu
Au Gold var. Electrum(Au,Ag)
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Chen, H., Sun, X., Li, D., Yin, R., Tong, Z., Wu, Z., ... & Deng, X. (2022). In situ apatite U-Pb dating for the ophiolite-hosted Nianzha orogenic gold deposit, Southern Tibet. Ore Geology Reviews, 144, 104811.

Other Regions, Features and Areas containing this locality

AsiaContinent
China
Eurasian PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
and/or  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 4, 2024 07:42:18 Page updated: January 16, 2023 14:52:21
Go to top of page