Movatterモバイル変換

[0]ホーム
URL:

Log InRegister
AboutSupport UsPhotosDiscussionsSearchLearnMore
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 QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Alforsite

A valid IMA mineral species
This page is currently not sponsored.Click here to sponsor this page.
Photos of Alforsite (2)Discuss Alforsite
Search Photos of Alforsite
EditAdd SynonymEdit CIF structuresClear Cache
Ba5(PO4)3Cl
Colour:
Colorless
Lustre:
Vitreous, Sub-Vitreous
Hardness:
5
Specific Gravity:
4.80 (Calculated)
Crystal System:
Hexagonal
Member of:
Apatite Group >Apatite Supergroup
Name:
Named by N. G. Newberry, Eric J. Essene, and Donald R. Peacor in honor of John T. Alfors [November 24, 1930 Reedley, CA, USA - December 27, 2005 Davis, CA], geologist and systematic mineralogist with the California geological Survey, USA.
Co-Type Localities:
ⓘBig Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
ⓘEsquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
Apatite Group. The barium analogue ofChlorapatite.



Unique Identifiers
Approval year:
1980

Classification of Alforsite

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
Dana 8th ed.:
41.8.5.2

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
Hey's CIM Ref.:
22.2.7

22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride

Mineral Symbols
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
5 onMohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Density:
4.80 g/cm3 (Calculated)
Comment:
Also 4.73

Optical Data of Alforsite
Surface Relief:
Moderate
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic

Chemistry of Alforsite

Crystallography of Alforsite
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 147511.
Geological Setting of Type Material:
Contact metamorphosed barium-rich metasediments
Associated Minerals at Type Locality:
CelsianFluorapatiteFresnoiteGillespitePyrite
QuartzSanborniteTitantaramelliteTourmalineWalstromite
Witherite

Synonyms of Alforsite

Other Language Names for Alforsite

Relationship of Alforsite to other Species
Other Members of Apatite Group:
ApatiteCa5(PO4)3(Cl/F/OH)
ChlorapatiteCa5(PO4)3ClHex. 6/m :P63/m
FluoralforsiteBa5(PO4)3FHex. 6/m :P6/m
FluorapatiteCa5(PO4)3FHex. 6/m :P63/m
FluorpyromorphitePb5(PO4)3FHex. 6/m :P63/m
HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m :P63/m
HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm(6/m2/m2/m) :P63/mcm
JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m :P63/m
MimetitePb5(AsO4)3ClHex. 6/m :P63/m
OxypyromorphitePb10(PO4)6O
PieczkaiteMn5(PO4)3ClHex. 6/m :P63/m
PliniusiteCa5(VO4)3FHex. 6/m :P63/m
PyromorphitePb5(PO4)3ClHex. 6/m :P63/m
StronadelphiteSr5(PO4)3FHex. 6/m :P63/m
SvabiteCa5(AsO4)3FHex. 6/mmm(6/m2/m2/m) :P63/mmc
TurneaureiteCa5(AsO4)3ClHex. 6/m :P63/m
Unnamed (OH-analogue of Mimetite)Pb5(AsO4)3(OH)Hex. 6/m :P63/m
VanadinitePb5(VO4)3ClHex. 6/m :P63/m

Common AssociatesHex. 6/m :P6/m8.BN.AraditeBaCa6[(SiO4)(VO4)](VO4)2FTrig. 3m :R3m8.BN.MagganasiteCuFe3+3O(AsO4)3Tric.1 :P18.BN.FluorpyromorphitePb5(PO4)3FHex. 6/m :P63/m8.BN.FluorsigaiiteCa2Sr3(PO4)3FHex. 6/m :P63/m8.BN.05PieczkaiteMn5(PO4)3ClHex. 6/m :P63/m8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m :P63/m8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m :P63/m8.BN.05VanadinitePb5(VO4)3ClHex. 6/m :P63/m8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm(6/m2/m2/m) :P63/mmc8.BN.05HydroxylhedyphaneCa2Pb3(AsO4)3(OH)Trig.3 :P38.BN.05Mimetite-MPb5(AsO4)3ClMon. 2/m :P21/b8.BN.05JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m :P63/m8.BN.05PliniusiteCa5(VO4)3FHex. 6/m :P63/m8.BN.05Hydroxylapatite-MCa5(PO4)3OHMon. 2/m :P21/b8.BN.05HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm(6/m2/m2/m) :P63/mcm8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3FHex. 6/m :P63/m8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig.3 :P38.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig.3 :P38.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig.3 :P38.BN.05Unnamed (OH-analogue of Mimetite)Pb5(AsO4)3(OH)Hex. 6/m :P63/m8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m :P63/m8.BN.05ParafiniukiteCa2Mn3(PO4)3ClHex. 6/m :P63/m8.BN.05MimetitePb5(AsO4)3ClHex. 6/m :P63/m8.BN.05 vaGermanate-pyromorphitePb5(PO4)2GeO48.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig.3 :P38.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m :P63/m8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m :P63/m8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m :P63/m8.BN.05Johnbaumite-MCa5(AsO4)3OHMon. 2/m :P21/m8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m :P63/m8.BN.05TurneaureiteCa5(AsO4)3ClHex. 6/m :P63/m8.BN.05MorelanditeCa2Ba3(AsO4)3ClHex.8.BN.05OxypyromorphitePb10(PO4)6O8.BN.05Deloneite(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5Trig. 3 :P38.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m :P63/m8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m :P63/m8.BN.05VanackeritePb4Cd(AsO4)3ClTrig. 3 :P38.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm(6/m2/m2/m) :P63/mmc8.BN.10ArctiteNa2Ca4(PO4)3FTrig.3m(32/m) :R3m8.BN.10KrügeriteBaCa6(SiO4)2[(P0.5S0.5)O4]2FTrig.3m(32/m) :R3m8.BN.15GoryainoviteCa2(PO4)ClOrth.mmm(2/m2/m2/m) :Pbcm

Fluorescence of Alforsite

Other Information
Search Engines:
  • Look for Alforsite on Google
  • Look for Alforsite images on Google
  • Look for Alforsite on Bing
  • Look for Alforsite images on Bing
  • Look for Alforsite on DuckDuckGo
  • Look for Alforsite images on DuckDuckGo
  • Look for Alforsite in the Rock H. Currier Digital Library
    • External Links:
  • Look for Alforsite on Webmineral
  • Look for Alforsite on Wikipedia
  • Look for Alforsite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • References and PDF downloads at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Handbook of Mineralogy page PDF
    • Mineral Dealers:
  • The Arkenstone - Fine Minerals
  • High-end worldwide specimens & outstanding customer service
  • Buy rare minerals from Excalibur Minerals
  • Blue Gems Australian & International
  • Buy from McDougall Minerals

    • References for AlforsiteⓘGun claimMcNeil et al. (2013)
    Germany
     
    Juroszek et al. (Ti 5 Fe)Skrzyńska et al. (2023)
    Israel
     
    Juroszek et al. (2025)Krzątała et al. (2020)Krzątała et al. (2023)
    Mexico
     
    Alfors et al. (1984)+2 other references
    USA (TL)
     
    Pemberton (1983)+1 other referenceNewberry et al. (1981)+1 other referenceNewberry et al. (1981)+3 other referencesDunning et al. (2003)
    Quick NavTopAbout AlforsiteUnique IdentifiersIMA ClassificationClassificationMineral SymbolsPhysical PropertiesOptical DataChemistryCrystallographyCrystal StructureX-Ray Powder DiffractionGeological EnvironmentType OccurrenceSynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescenceOther InformationInternet LinksReferencesLocalitiesLocality List
     
    and/or 
    Mindat.org is an outreach project of theHudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
    Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, 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 byJolyon Ralph.
    To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844.doi:10.2138/am-2024-9486.
    Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: November 28, 2025 22:52:37 Page updated: November 1, 2025 15:24:19