T  N  Needle crystals  1.  Simple needle  a.  Elementary needle Elementary needle ( N1a )
 b.  Bundle of elementary needles Bundle of elementary needle ( N1b )
 2.  Combination Combination of needle crystals ( N2 )
 U  C  Columnar crystal  1.  Simple column  a.  Pyramid, Bullet type Pyramid, Bullet type ( C1a )
 b.  Hexagonal column Hexagonal column ( C1b )
 2.  Combination  a.  Combination of bullets Combination of bullets ( C2a )
 b.  Combination of columns Combination of columns ( C2b )
 V  P  Plane crystal  1.  Regular crystal
    developed in
    one plane
 a.  Symple plate Symple plate ( P1a )
 b.  Blanches in sector form Blanches in sector form ( P1b )
 c.  Plate with simple extensions Plate with simple extensions ( P1c )
 d.  Broad branches Broad branches ( P1d )
 e.  Simple stellar form Simple stellar form ( P1e )
 f.  Ordinary dendritic form Ordinary dendritic form ( P1f )
 g.  Fernlike crystal Fernlike crystal ( P1g )
 h.  Stellar crystal with plates at ends Stellar crystal with plates at ends ( P1h )
 i.  Plate with dendritic extensions Plate with dendritic extentions ( P1i )
 2.  Crystal with
    irregular number
    of branches
 a.  Three-branched crystal Three-branched crystal ( P2a )
 b.  Four-branched crystal Four-branched crystal ( P2b )
 c.  Others Others ( P2c )
 3.  Crystal with
    twelve branches
 a.  Fernlike crystal Fernlike crystal ( P3a )
 b.  Broad branches Broad branches ( P3b )
 4.  Malformed crystal   Many varieties Malformed crystal ( P4 )
 5.  Spacial assemblage
    of plane branches
 a.  Special hexagonal type Special hexagonal type ( P5a )
 b.  Radiating type Radiating type ( P5b )
 W  CP  Combination of
        column and
        plane crystals
 1.  Column with
    plane crystals
    at both ends
 a.  Column with plates Column with plates ( CP1a )
 b.  Column with dendritic crystal Column with dendritic crystals ( CP1b )
 c.  Complicated capped column Complicated capped column ( CP1c )
 2.  Bullets with
    plane crystals
 a.  Bullets with plates Bullets with plates ( CP2a )
 b.  Bullets with dendritic crystals Bullets with dendritic crystals ( CP2b )
 3.  Irregular assemblage of columns and plates Irregular assemblage of columns and plates ( CP3 )
 X  S  Columnar crystals with extended side planes Columnar crystals with extended side planes ( S )
 Y  R  Rimed crystals
       (crystals with
       cloud particles
        attathed )
 1.  Rimed crystal Rimed crystal ( R1 )
 2.  Thick plate Thick plate ( R2 )
 3.  Graupellike snow  a.  Hexagonal type Hexagonal type ( R3a )
 b.  Lump type Lump type ( R3b )
 4.  Graupel  a.  Hexagonal graupel Hexagonal graupel ( R4a )
 b.  Lump graupel Lump graupel ( R4b )
 c.  Conelike graupel Conelike graupel ( R4c )
 Z  I  Irregular snow
       particle
 1.  Ice particle Ice particle ( I1 )
 2.  Rimed particle Rimed particle ( I2 )
 3.  Miscellaneous

General classificasion of snow crystals ( U. Nakaya, 1954 )


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