Allanite

Hardness ( Moh )

" 5.5-6

Crystal System

Monoclinic

Specific Gravity

3.5 - 4.2

Refractive Index

1.640 - 1.828

Birefringence

Family

Epidote Supergroup

Colour(s)

Brown to black

Cleavage

Francture Type

Conchoidal to uneven

Luster

Streak

Grey

Transparency

Translucent to opaque

Formula

(Ce,Ca,Y,La)2(Al,Fe+3)3(SiO4)3(OH)

Country

Found In Afghanistan ,Algeria ,Angola ,Antarctica ,Argentina ,Armenia ,Australia ,Austria ,Belarus ,Belgium ,Bolivia ,Botswana ,Brazil ,Bulgaria ,Cameroon ,Canada ,Chile ,China ,Colombia ,Cyprus ,Czech Republic ,Egypt ,Eswatini ,Falkland Islands ,Finland ,France ,Germany ,Ghana ,Greece ,Greenland ,Guatemala ,Guyana ,Hungary ,Iceland ,India ,Indonesia ,Iran ,Ireland ,Italy ,Japan ,Kazakhstan ,Kenya ,Kyrgyzstan ,Lithuania ,Madagascar ,Malawi ,Mauritania ,Mexico ,Mongolia ,Morocco ,Mozambique ,Myanmar ,Namibia ,Nepal ,New Zealand ,Niger ,Nigeria ,North Korea ,North Macedonia ,Norway ,Pakistan ,Peru ,Poland ,Portugal ,Romania ,Russia ,Saudi Arabia ,Slovakia ,Somaliland ,South Africa ,South Korea ,Spain ,Sri Lanka ,Sweden ,Switzerland ,Taiwan ,Tajikistan ,Tanzania ,Thailand ,Turkey ,UK ,Ukraine ,United Arab Emirates ,USA ,Uzbekistan ,Vietnam ,Yemen ,Zambia ,Zimbabwe