Erupcion mine, Mun. de Aumada. A lead mine in the Los Lamentos district, famous for wulfenite

Wulfenite
Deep orange tabular wulfenite XX up to 0.6cm wide. This thicky-tabular shape of the XX is  typical for this locality
6x5.5cm
Eruption mine, Los lamentos Mts., Chihuahua. Mexico
Specimen n.458

Another photo: entire piece

Wulfenite
Intergrown of tabular XX on matrix. The bigger X is up to 2.3cm long
7x4cm
Eruption mine, Los Lamentos Mts., Chihuahua. Mexico
Specimen n.482

Wulfenite
Tabular XX with a dark-brown color
10x6cm
Eruption mine, Los Lamentos Mts. near Villa Ahumada, Chihuahua. Mexico
Specimen n.60

Another photo: a bigger view

Wulfenite
Brownish-orange tabular wulfenite XX, well in evidence of matrix. The biggest has a 0.9 cm edge
7x7cm
Eruption mine, Los Lamentos Mts. near Villa Ahumada, Chihuahua. Mexico
Specimen n.491

Naica mine, Mun. de Saucillo. A silver-lead-zinc-tungsten mine

Fluorite
Twinned octahedral XX, semitransparent, edges up to 1.9cm on a plate covered by fluorite octahedron and small quartz XX
18x10.5cm
Naica, Mun. de Saucillo, Chihuahua. Mexico
Specimen n.428

Another photo: entire piece

Fluorite
Cube modified by dodecahedral planes, with light purple color and interesting XX shape (edge is 1.1 cm long). On matrix with globular calcite and pyrite
4.5x2cm
Naica, Mun. de Saucillo, Chihuahua. Mexico
Specimen n.728

Silver 
Classic specimen of native silver crystals up to 1.8cm long in white calcite matrix. The silver XX are in a parallel, "criss-crossing" formation
3x3.8cm
Batopilas, Chihuahua. Mexico
Specimen n.348

Another photo: entire piece

Boleite
Well defined X, 0.5cm edge, on matrix. From the  sedimentary copper deposit in this locality that gives the name to the mineral
4x6cm
Boleo, Baia California. Mexico
Specimen n.355

Conicalcite
Globular mass with calcite
8x6cm
Ojuela mine, Mapimi, Durango. Mexico
Specimen n.329