عرض مصدر لدلاميت

{{يتيمة|تاريخ =مارس 2023}}
{{بطاقة معدن
| name        = Ludlamite
| image       = Ludlamite-121295.jpg
| alt         = 
| caption     = Ludlamite from the Huanuni mine, [[Huanuni]], Bolivia
| category    = [[معادن الفوسفات]]
| formula     = (Fe,Mn,Mg)<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O
| molweight   = 
| strunz      = 8.CD.20
| dana        = 
| system      = [[نظام بلوري أحادي الميل]]
| class       = Prismatic (2/m) <br/>{{Ill-WD2|id=Q903232|نص=تدوين هيرمان-موغين}}: (2/m)
| symmetry    = Monoclinic <br/>[[زمرة فراغية]]: ''P''2<sub>1</sub>/a
| unit cell   = a = 10.541(5), b = 4.646(4) <br/>c = 9.324(5)&nbsp;[Å]; β = 100.52°; Z&nbsp;=&nbsp;2
| color       = Apple-green to bright green
| colour      = 
| habit       = Tabular crystals; massive, granular
| twinning    = 
| cleavage    = Cleavage: perfect on {001}, indistinct on {100} 
| fracture    = 
| tenacity    = 
| mohs        = 3.5
| luster      = Vitreous, pearly on cleavage
| streak      = Pale greenish white
| diaphaneity = Translucent
| gravity     = 3.12–3.19
| density     = 
| polish      = 
| opticalprop = Biaxial (+)
| refractive  = n<sub>α</sub> = 1.650 - 1.653 n<sub>β</sub> = 1.669 - 1.675 n<sub>γ</sub> = 1.688 - 1.697
| birefringence = δ = 0.038 - 0.044
| pleochroism = 
| 2V          = Measured: 82°
| dispersion  = 
| extinction  = 
| length fast/slow =
| fluorescence = 
| absorption  = 
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = 
| impurities  = 
| references  = <ref name=Mindat>[http://www.mindat.org/min-2452.html Mindat.org] {{Webarchive|url=https://web.archive.org/web/20171224155410/https://www.mindat.org/min-2452.html |date=24 ديسمبر 2017}}</ref><ref name=Webmin>[http://www.webmineral.com/data/Ludlamite.shtml Webmineral.com] {{Webarchive|url=https://web.archive.org/web/20171224101814/http://www.webmineral.com/data/Ludlamite.shtml |date=24 ديسمبر 2017}}</ref><ref name=HBM>[http://www.handbookofmineralogy.com/pdfs/ludlamite.pdf Handbook of Mineralogy] {{Webarchive|url=https://web.archive.org/web/20160304063034/http://www.handbookofmineralogy.com/pdfs/ludlamite.pdf |date=04 مارس 2016}}</ref>
}}
'''اللدلاميت''' (Ludlamite) هو [[معدن]] [[فوسفات]] نادر، [[صيغة كيميائية|صيغته الكيميائية]] (Fe,Mn,Mg)<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O. اكتشفه [[هنري لدلام]] في أواخر القرن التاسع عشر في [[كورنوال]]، [[إنجلترا]].