Hingganite, hellandite and wodginite occur in druse type pegmatite in quarries at Tahara, Hirukawa-mura, Ena-gun, Gifu prefecture, Japan. Two kinds of hingganite, (Y1.22Ca0.26…)Σ1.91Fe2+0.09Be2.08Si2.08O8.09(OH)1.91 and (Ce0.54Y0.51Nd0.31…)Σ2.08Fe2+0.41Be1.96Si1.96O8.87(OH)1.13, were found as colorless (hingganite-(Y)) to light brown (hingganite-(Ce)) euhedral crystals associated with quartz, feldspar, mica, cassiterite, stokesite, flourite, chlorite, sphene, and an unknown mineral chemically related to hingganite. Hellandite, (Ca5.75Y3.70Nd0.24Dy0.21…)Σ10.65 (AI1.45Mn0.25Ti0.21Fe0.11) (OH)4[Si8B8O40.22(OH)3.78] occurs as an aggregate of colorless transparent crystals covering surface of hingganite. The associated minerals of hellandite are quartz, flourite, chlorite and zeolite group minerals. Wodginite, Mn3.84 (Sn1.53 Ti1.11Fe3+0.60W0.31Ta0.27Zr0.18) (Ta7.99Nb0.01)O32 occurs as a black prismatic crystal on feldsper, associated with quartz, mica, topaz, beryl, flourite. The chemical compositions and X-ray crystallographic data of these minerals are given and are compared and discussed with data previously reported. Lattice parameters: Hingganite-(Ce), monoclinic, a=9.996(10), b=7.705 (7), c=4.792(4) Å, β=90.06(4)°; Hellandite, monoclinic, a=18.91(2), b=4.684(6), c=10.30(6) Å, β=111.7(1)°; Wodginite, monoclinic, a=9.513(9), b=11.456(12), c=5.108(4) Å, β=91.09(9)°.
