Baryte
Group of XX, transparent up to 4.5 cm, on sphalerite and galena matrix
11x11cm
Turt mine, Satu Mare, Maramures Co. Romania
Specimen n.345

Another photo: different view

Baryte
Large and well developed XX, edge up to 3.4cm
20x16cm
Baia Mare, Maramures Co. Romania
Specimen n.344

Baryte
Mineralized surface covered by small XX
13.5x9cm
Baia Mare, Maramures Co. Romania
Specimen n.1222

Another photo: bigger view

Bournonite
Plate of sphalerite with Bournonite XX up to 1.5cm, and quartz
14x9cm
Baia Sprie, Maramures co. Romania
Specimen n.332

Another photo: bigger photo

Calcite
Calcite balls (up to 1.5cm wide) on white dolomite covering quartz XX (see the 2nd photo)
7.5x4.5cm
Cavnic mine, Cavnic , Maramures co. Romania
Specimen n.582

Another photo: bigger view
Another photo: side view

Calcite
2nd generation XX, max 2.5cm wide, black for boulangerite inclusion, on gray-to-white calcite
8x6.5cm
Herja mine, Baia Mare, Maramures Co., Romania
Specimen n.584

Chalcopirite
Big malformed XX, with quartz covered by calcite
12x8cm
Cavnic mine, Cavnic, Maramures co. Romania
Specimen n.330

Another photo: entire piece

Galena
Group of modified cubes (cube and octahedron) on matrix
16x9cm
Turt mine , Satu Mare, Maramures co. Romania
Specimen n.326

Jamesonite
Rounded balls of Jamesonite needles. On the piece some baryte pale blue, very transparent, with a lot of small Jamesonite XX included (see the 2nd photo for details)
5.5x6cm
Baia Sprie, Maramures co. Romania
Specimen n.575

Another photo: a detail of barite XX

Manganoan calcite
Two XX, twinned in an unusual "butterfly" formation, 5.8cm wide; it is similar to the nice formation of baryte in my specimen n.548. The biggest X is 4cm long. On a sphalerite plate covered by small gray quartz XX and minor manganoan calcite XX
15x13cm
Cavnic mine, Cavnic, Maramures co. Romania
Specimen n.331

Quartz
Flower of XX 2.5cm long, with a minor coating
5.5x5.5cm
Turt Mine, Satu Mare, Maramures Co. Romania
Specimen n.868

Quartz
XX up to 16.5cm tall, pale ametist; the two main XX are twinned under the Japan law. The biggest and some other minor are biterminated, and covered by microcrystalline calcite
16.5x11cm
Baia Sprie mine, Maramures co. Romania
Specimen n.576

Another photo: entire piece

Quartz
Black XX, covered, only on one side, from dolomite and micro XX of chalcopyrite (Pyrite?) 
12x10cm
Cavnic mine, Cavnic, Maramures Co. Romania
Specimen n.475

Realgar
XX and masses of red Realgar slightly and partially alterated, scattered around the quartz. Quartz is in XX of different size, the biggest is 3.2x1.6cm. There is Stibnite in micro grains spread around the Quartz
29x19cm
Baia Sprie, Maramures. Romania
Specimen n.325

Another photo: entire piece

Scheelite
Single X, with calcite and chalcopyrite
4.5x4cm
Baia Sprie, Maramures co. Romania
Specimen n.583

Another photo: entire piece

Stibnite
Elongated XX, with baryte
12x16cm
Cavnic mine, Cavnic, Maramures co. Romania
Specimen n.335

Another photo: entire piece

Stibnite
Thin elongated XX, grouped, with a coating of sulphur
13x8cm
Cavnic mine, Cavnic, Maramures co. Romania
Specimen n.1000

Another photo: entire piece

Stibiconite
Prismatic XX of stibnite transformed in stibiconite; up to 2 cm long
6x4cm
Baia Mare, Maramures co. Romania
Specimen n.303

Wolframite
Prismatic XX up to 2cm tall, on calcite covering chalcopyrite in some XX (It is not a valid IMA mineral, because it is an intermediate between hubnerite and ferberite with unspecified chemical composition). I suppose this piece is ferberite
10x9cm
Cavnic mine, Cavnic, Maramures co. Romania
Specimen n.334

Another photo: entire piece