Arizona

Copper
	RV59H7: Extraordinary miniature. Faces and edges of the crystals have a very uncommon definition and the crystals forms are complex. Furthermore they are practically unaltered so they have an intense color and luster. Ajo, Pima County, Arizona  USA Specimen size: 3.4 × 2.3 × 1.7 cm Main crystal size: 0.6 × 0.5 cm With record from the Folch Collection Probably Opal intense fluorescence short UV

	Copper with Cuprite
RP38F8: Aerial growth of crystals of Cuprite (cube + dodecahedra) with slightly curved edges and on a matrix of native copper crystals. It was a 1961 gift from Mr. Albert Haag, of Tucson, as shown on the record for this one. Bisbee, Cochise County, Arizona  USA (±1961) Specimen size: 3.4 × 2.3 × 1.9 cm Main crystal size: 0.6 × 0.4 cm With handwritten note & record from the Folch Collection

Dioptase with Wulfenite
	RB27F8: From the Mammoth Mine, no less! A group of Dioptase crystals with magnificent color, on matrix, and with the rare feature of some Wulfenite. Mammoth Mine, Tiger, Arizona  USA (±1959) Specimen size: 3.3 × 2.4 × 1.8 cm With handwritten note & record from the Folch Collection Calcite fluorescent long & short UV

	Wulfenite
RL87F8: A classic from the Red Cloud Mine. Two crystals that have excellent brilliance and color and that are on matrix. From the 1970s finds, which is when he bought it. Red Cloud Mine, La Paz County, Arizona  USA Specimen size: 2.5 × 2 × 1.5 cm With handwritten note & record from the Folch Collection

California

Spodumene (Kunzite)
Front Rear	RC13K9: Floater and doubly terminated Spodumene crystal with multiple terminations at both ends. Pink color, with a strong dichroism. Pala Chief Mine, Pala District, San Diego County, California  USA (±1962) Specimen size: 5.2 × 2.8 × 1.2 cm With handwritten note from the Folch Collection Minor fluorescence long & short UV

	Spodumene (Kunzite)
FB36K0: Floater doubly terminated crystal with rounded terminations. The color is good and especially intense on the extremities of the crystal. Pala Chief Mine, Pala District, San Diego County, California  USA (±1962) Specimen size: 5.7 × 2.8 × 1.3 cm With handwritten note from the Folch Collection Minor fluorescence with long & short UV	Front Rear

Spodumene (Kunzite)
Front Top	FA47K0: Floater doubly terminated crystal with dissolution forms and anomaly growths. Its color is exceptionally intense. The original label notes that the specimen was sold to Sr. Folch by Mr. Bouest (or Bouert), from Los Angeles, October 1962. Pala Chief Mine, Pala District, San Diego County, California  USA (±1962) Specimen size: 4.1 × 4 × 2.5 cm With record from the Folch Collection Minor fluorescence with long & short UV

	Rutile
TX10I8: Prismatic crystal with very well-defined faces and edges. It has translucent reddish zones. The crystal is partially covered by matrix. Champion Mine, Laws, White Mountains, Mono County, California  USA (±1959) Specimen size: 1.7 × 1.3 × 1.4 cm With handwritten note from the Folch Collection

Rutile
	TY11I8: Prismatic crystal with very well defined faces and edges. It is sharp, bright and dark brown. Champion Mine, Laws, White Mountains, Mono County, California  USA (±1959) Specimen size: 1.5 × 1.5 × 1.3 cm With handwritten note from the Folch Collection

	Caledonite with Linarite
RB18G2: A sample from a very uncommon locality that we must not confuse with the better known Mammoth-St. Anthony mine. Caledonite, greenish-blue and vitreous, is with Linarite and they are very abundant on the Limonite matrix. This specimen was purchased from Burminco, Monrovia, California in 1955. Baker, San Bernardino County, California  USA (±1955) Specimen size: 8 × 6.3 × 5.2 cm With handwritten note & record from the Folch Collection

Andradite
	RE16G6: Crystals reach a considerable size and have an excellent luster. They show equal development of rhombohedral and trapezohedral forms, with some other faces of the cubic system. One of the crystals has a contact on one of its faces. A good sample from this classic American locality. Calaveras County, California  USA (±1958) Specimen size: 4.7 × 3.7 × 2.9 cm Main crystal size: 3.4 × 2.7 cm With handwritten note & record from the Folch Collection

	Lawsonite
RX14G2: An old sample from a very uncommon locality that we must not confuse with the type locality (Tiburon Peninsula). Pink crystals are well developed on a Glaucophane matrix. The sample was collected by Scott J. Williams (Scottsdale, Arizona) in 1948 and it was purchased from him by Folch in 1961. Valley Ford, Sonoma County, California  USA (1948) Specimen size: 3.5 × 3.2 × 3 cm Main crystal size: 0.7 × 0.6 cm With handwritten note & record from the Folch Collection

Colorado

Rhodochrosite with Quartz
	RA46H0: Two rhombohedral crystals with very sharp faces and edges on a white matrix of small Quartz crystals. Color is good for the locality which we must point out is historic. American Tunnel, Howardsville, Silverton, Colorado  USA (±1966) Specimen size: 3.5 × 2 × 1.5 cm Main crystal size: 1.8 × 1.6 cm With handwritten note from the Folch Collection

	Rhodochrosite on Quartz
RB97F9: Spheroidal aggregates of lenticular crystals with an intense pink color, contrast with the white Quartz matrix. The Color and brightness are better than usual in the samples from this historical mine. American Tunnel Mine, Howardsville, Silverton, Colorado  USA Specimen size: 5 × 3.3 × 2 cm Main crystal size: 1.2 × 1.1 cm With handwritten note & record from the Folch Collection

Hübnerite with Quartz
Front Rear	RT89J1: Specimen from a classic locality, very different from those from other well known localities for Hübnerite. Crystals are extraordinarily flat and bright and form almost leafy aggregates. The color is bronze-red, typical of its place of origin and contrasts with the white concretions of Quartz. Adams Mine, Cement Creek, Silverton, San Juan County, Colorado  USA (±1955) Specimen size: 8.7 × 6.5 × 3.5 cm With handwritten note from the Folch Collection

	Hübnerite
RK70H0: An excellent classic, with very sharp crystals in groups of parallel growths, with the best color and luster and an esthetic contrast with the snowy white matrix. A very difficult specimen to find today. Adams Mine, Cement Creek, Silverton, San Juan County, Colorado  USA Specimen size: 5.1 × 3.4 × 4.5 cm Main crystal size: 3 × 1.6 cm With handwritten note from the Folch Collection	Front Rear

Microcline (Amazonite)
Front Top	RA38F9: In this single crystal the color is magnificent, and the faces are exceptionally well-developed. Pikes Peak, El Paso County, Colorado  USA (±1926) Specimen size: 4.5 × 3.9 × 4.3 cm With handwritten note & record from the Folch Collection

	Copper
RP56G0: In the group, the crystals show especially sharp crystal faces. The surface of the faces had resisted the passage of time and they are practically free of any alteration. Lake Superior, Keweenaw County, Michigan  USA Specimen size: 2.6 × 1.7 × 1.5 cm With handwritten note from the Folch Collection

Epidote with Quartz
	RZ8F8: A Prince of Wales classic. The long crystals of Epidote, apart from the perfect development of the faces, have a good degree of translucence and contrast with the numerous crystals of Quartz. Folch bought this from Al McGuinness in 1972 at Tucson. Copper Mountain, Prince of Wales Island, Alaska  USA (±1972) Specimen size: 6 × 5 × 3.3 cm Main crystal size: 3.8 × 1.6 cm With handwritten note & record from the Folch Collection

	Enargite with Pyrite
RE36G0: A classic specimen. Prisms of Enargite contrast with complex crystals of Pyrite showing clearly the octahedron and pyritohedron faces. Folch purchased the specimen directly in Butte, Montana, in 1955. Butte, Silver Bow County, Montana  USA (±1955) Specimen size: 3.2 × 3.1 × 2 cm With handwritten note from the Folch Collection

Enargite with Pyrite
	RT36G0: The prisms of Enargite, very bright, contrast with octahedral crystals of Pyrite with a modest development of pyritohedron faces. Folch purchased the specimen directly in Butte, Montana, in 1955. Butte, Silver Bow County, Montana  USA (±1955) Specimen size: 3.5 × 3.3 × 2 cm With handwritten note & record from the Folch Collection

	Enargite with Pyrite
RR14K9: Group of prismatic crystals with well defined faces and edges and good luster. On matrix with small octahedral Pyrite crystals. Butte, Silver Bow County, Montana  USA Specimen size: 4.5 × 3.4 × 2.5 cm Main crystal size: 1.0 × 1.0 cm With handwritten note from the Folch Collection

Herderite
	RE67F8: A rarity. The crystal, even though it is not well terminated on the rear, is well developed and is quite large for the locality, which in turn is a classic one for US mineralogy. It is a floater. Rumney, Grafton County, New Hampshire  USA (±1967) Specimen size: 3 × 2 × 1.5 cm With handwritten note & record from the Folch Collection

	Beryllonite
RA97F8: From the type locality for this rare species. While not well-defined (as is typical for Beryllonite) one can see the faces of the crystal, which is notable for its transparency. A floater. Stoneham, Oxford County, Maine  USA (±1965) Specimen size: 2.1 × 1.8 × 1 cm With handwritten note & record from the Folch Collection Type locality

Grossular with Calcite
	RG86G0: Crystals have the dodecahedral form and they are bright and sharp, standing on a Calcite matrix. The specimen proceeds from the A. Santos collection and it passed to Folch collection in 1952. Phippsburg, Sagadahoc County, Maine  USA Specimen size: 5.3 × 4.7 × 3 cm Main crystal size: 1.3 × 0.9 cm With handwritten note & record from the Folch Collection

	Datolite with Chalcopyrite
RF56K0: Group of crystals with very sharp faces and edges of green color deeper than usual on the samples from this locality, classic for the species. On the surface of Datolite there are small crystals of Chalcopyrite. New Street Quarry, W. Peterson, Passaic County, New Jersey  USA (±1965) Specimen size: 8.3 × 6.2 × 4.1 cm Main crystal size: 1.8 × 1 cm With handwritten note from the Folch Collection

Rhodonite
	RA26H7: Group of prismatic crystals of very well defined faces and edges and a good color, locally with octahedral crystals of Franklinite. Specimens like this are very hard to find. Franklin, Sussex County, New Jersey  USA (±1970) Specimen size: 9.3 × 5 × 5.5 cm Main crystal size: 2.9 × 0.8 cm With record from the Folch Collection

	Hewettite on Gypsum
RJ36F8: A superb formation of fibrous crystals that have hints of gold and bronze and are on gypsum. Collected by Sr. Folch in October 1959. Homestake Mine, Grants District, New Mexico  USA (1959) Specimen size: 4.4 × 4.1 × 1.9 cm With handwritten note & record from the Folch Collection

Twinned Rutile
	RC37F8: A magnificent cyclic twin from the classic Magnet Cove locality. The perfect twin! A floater as the base has recrystallized. The typed Schortmann’s label also has some handwritten notes made by Folch. Magnet Cove, Hot Springs County, Arkansas  USA (±1956) Specimen size: 2.6 × 2.4 × 2.9 cm With handwritten note & record from the Folch Collection

Mexico

	Pyrrhotite with Dolomite
RA46L9: Group of prismatic Pyrrhotite crystals with excellent terminations, partially covered by small Dolomite crystals. The piece is accompanied by a handwritten label and a card (nr. 9812) from the Folch Collection, where we can read that it was purchased in 1966. Santa Eulalia, Chihuahua  Mexico (1966) Specimen size: 12.6 × 7.4 × 4.4 cm Main crystal size: 1.5 × 1.4 cm With handwritten note & record from the Folch Collection

Polybasite with Chalcopyrite and Quartz
Front Top	RD46H3: Group of very sharp laminar crystals with very marked triangular growth figures on the pinacoid faces. Chalcopyrite growths and small white crystals of Quartz enhance the esthetics of the specimen. With the sample there is a label of the supplier: Lidstrom’s, from Oregon and we will give the buyer also a copy of the analysis of the Polybasite. Chihuahua  Mexico Specimen size: 2.8 × 2.7 × 2.4 cm With handwritten note from the Folch Collection

	Wulfenite with Calcite
RJ46H8: The crystal is very thick, almost prismatic, and has very well-defined faces and edges. Its color is very good and the aerial position of the crystal on the matrix make the sample very esthetic. Los Lamentos, Chihuahua  Mexico (1960) Specimen size: 4.5 × 4.3 × 4 cm Main crystal size: 1.1 × 0.8 cm With handwritten note from the Folch Collection	Front Rear Top

Wulfenite
	RX96F8: The crystals, with perfect color and brilliance, have a lengthened form that is not common among examples from Los Lamentos. Los Lamentos, Chihuahua  Mexico Specimen size: 6.3 × 4.7 × 4 cm Main crystal size: 0.6 × 0.3 cm With handwritten note from the Folch Collection

	Wulfenite with Calcite
RC52H3: Group of tabular crystals very sharp, with excellent color and luster and contrasting with a white matrix. We offer a label of the first supplier, Barney Goff, from New Hope, with autographed notes of Sr. Folch. Mina Ahumada, Los Lamentos, Chihuahua  Mexico (±1973) Specimen size: 11 × 7 × 4 cm Main crystal size: 1.3 × 1.3 cm With handwritten note from the Folch Collection Calcite fluorescent long & short UV

Wulfenite
	RX37J1: Group of bipyramidal acute crystals, much of them doubly terminated, very well defined and with intense deep orange color. Although the locality on original the label is Tiger, we authenticated the specimen as coming from Los Lamentos, so we give this last locality as correct. We will send the label of the sample, from the Ernest Windisch collection (World Wide Minerals), Philipsburg, Québec, to the buyer. Los Lamentos, Chihuahua  Mexico Specimen size: 7.3 × 4.4 × 3.5 cm Main crystal size: 0.8 × 0.3 cm With handwritten note from the Folch Collection

	Silver with Calcite
RE27G0: An esthetic specimen, very aerial, in which are some crystals are elongated and some of them show the twin plane clearly, in a Calcite matrix. Sr. Folch purchased the specimen in 1962, but, as documentation explains, it was probably mined around 1910. Batopilas, Chihuahua  Mexico (±1910) Specimen size: 5.9 × 3.5 × 3.3 cm Main crystal size: 1.7 × 0.2 cm With handwritten note & record from the Folch Collection Calcite fluorescent long & short UV	Front Rear

Adamite
Front Side	RD76H7: The color and the esthetics of the specimen are very good. Crystals, small and very bright, form spheroidal growths on a matrix of Limonite. Mapimí, Municipio de Mapimí, Durango  Mexico Specimen size: 4.7 × 4.2 × 3.2 cm With record from the Folch Collection Extremely fluorescent long & short UV

	Adamite
RT36H0: A pleasant group of crystals of excellent color and luster and completely undamaged, on the Limonite matrix typical of Mapimí specimens. Mapimí, Municipio de Mapimí, Durango  Mexico Specimen size: 5 × 3.5 × 3.7 cm With handwritten note from the Folch Collection Extremely fluorescent long & short UV

Apatite-(CaF)
	RD56F8: A classic crystal with excellent color and transparency, and on matrix. Folch bought it in Cerro del Mercado, Durango, in September 1956. Cerro del Mercado, Durango  Mexico (1956) Specimen size: 4.7 × 3.6 × 3.2 cm Main crystal size: 2.2 × 1.1 cm With handwritten note & record from the Folch Collection Fluorescent long & short UV

	Calcite on Quartz
RR46G0: Excellent representation of Calcite from Guanajuato. The specimen is especially esthetic due to the aerial position of flat rhombohedral crystals, with a lenticular habit, on a matrix of lightly violet Quartz. Guanajuato, Guanajuato  Mexico (±1967) Specimen size: 5.7 × 5.3 × 3.6 cm Main crystal size: 3.3 × 3.1 cm With handwritten note & record from the Folch Collection Calcite very fluorescent long & short UV

Tellurite with Quartz
	TK26J1: Excellent miniature of this rare tellurium oxide. It is in groups of deep yellow acicular crystals in vugs on a Quartz matrix. We will send the label of the sample, from Scott Williams Mineral Company, Scottsdale, Arizona, to the buyer. Moctezuma Mine, Moctezuma, Sonora  Mexico Specimen size: 2.9 × 3.1 × 2.4 cm Main crystal size: 0.2 × 0.2 cm With handwritten note from the Folch Collection

	Gahnite with Quartz
RE6K9: Well defined blue-grayish octahedral crystals on a Quartz matrix. Bossost, Val d'Aran, Lleida  Spain Specimen size: 5.0 × 4.0 × 3.4 cm Main crystal size: 0.6 × 0.5 cm With handwritten note & record from the Folch Collection

Wulfenite (Chillagite)
	RA60K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appereance. Teresita Mine, Sant Fost de Campsentelles, Vallès Oriental, Barcelona  Spain Specimen size: 3.4 × 2.3 × 1.2 cm With handwritten note from the Folch Collection

	Wulfenite (Chillagite)
RC59K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appearance. Teresita Mine, Sant Fost de Campsentelles, Vallès Oriental, Barcelona  Spain Specimen size: 2.4 × 2.0 × 1.4 cm With handwritten note from the Folch Collection

Wulfenite (Chillagite)
	RD10K9: Excellent miniature, very representative of this rare variety that is an intermediate member of the Wulfenite-Stolzite series. From a Catalan classic locality close to Barcelona. Crystals show a lenticular appereance. Teresita Mine, Sant Fost de Campsentelles, Vallès Oriental, Barcelona  Spain Specimen size: 2.3 × 2.1 × 0.8 cm With handwritten note from the Folch Collection

	Cerussite with Galena
FQ11K0: The sample, mined in 1959, forms groups of twinned crystals from the old oxidation zone of this historic and classic Spanish locality. The matrix is basically of massive Galena and Cerussite with Limonite. Mina Raimunda, El Molar, Tarragona  Spain (1959) Specimen size: 7.5 × 4.5 × 4.4 cm Main crystal size: 0.5 × 0.3 cm With handwritten note from the Folch Collection Fluorescent long UV & minor fluorescence short UV	Front Top

Dolomite
	RP17F9: The crystals of this aggregate have great clarity and brightness, with inner iridescent inclusions. The interpenetration twin is apparent in different zones on the specimen. Cantera Azkarate, Eugui, Navarra  Spain (1968) Specimen size: 7 × 5 × 3.7 cm With handwritten note from the Folch Collection

	Twinned Dolomite
FY47K0: Twin of two rhombohedral crystals of very well defined faces and edges, bright and translucent. The original label indicates that it was a gift from Carlos Díaz de Mauriño, from Pamplona, in 1967, to Sr. Folch. Cantera Azkarate, Eugui, Navarra  Spain (±1967) Specimen size: 7.7 × 6.1 × 6 cm Main crystal size: 3.8 × 3.7 cm With handwritten note & record from the Folch Collection	Front Top

Doubly terminated Calcite
Front Side	RZ11H9: The sample mined the August 1960, must be one of the first known from the locality. Doubly terminated, a twin of two trapezohedrons with rhombohedrons forming the terminations. Minas de La Florida, La Florida, Cantabria  Spain (06/1960) Specimen size: 5 × 3.7 × 2.8 cm With handwritten note from the Folch Collection Minor fluorescence short UV

	Sphalerite
RF86L9: Very sharp Sphalerite crystal with some curved edges. A translucent sample with a good honey to red intense color. The piece is accompanied by a handwritten label from the Folch collection. Mina Las Mánforas, Áliva, Picos de Europa, Cantabria  Spain Specimen size: 7.3 × 6 × 3 cm With handwritten note from the Folch Collection

Sphalerite with Dolomite
	RH89K9: Complex Sphalerite crystal group, with multiple faces and curved edges. The color is excellent and contrasts with the snowy white Dolomite matrix. Las Mánforas Mine, Áliva, Picos de Europa, Cantabria  Spain (±1968) Specimen size: 10.1 × 7.5 × 6.5 cm Main crystal size: 5.7 × 5.3 cm With handwritten note from the Folch Collection

	Tyrolite with Chrysocolla and Azurite
FT6K0: Leafy groups of laminar crystals on matrix, with Chrysocolla and vugs of small crystals of Azurite. Mina Delfina, Ortiguero, Cabrales, Asturias  Spain (1981) Specimen size: 7.9 × 6.2 × 5 cm Main crystal size: 0.8 × 0.4 cm With handwritten note from the Folch Collection

Cinnabar
	RK64L3: Well defined and bright Cinnabar crystals, some of them very aerial, with prominent rhombohedral faces with curvatures and fine striations. We can see small drops of liquid mercury on the matrix. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (±1964) Specimen size: 3.4 × 3.1 × 2.2 cm Main crystal size: 0.4 × 0.3 cm With handwritten note from the Folch Collection

	Cinnabar with Barite
RV6L9: Group of Cinnabar crystals with well defined faces and edges, with a honey-colored Barite crystal (that we have analyzed) on a black quartzite matrix and grey Quartz. The piece is accompanied by a handwritten label from the Folch collection. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (±1973) Specimen size: 5 × 3.8 × 3.3 cm Main crystal size: 0.6 × 0.3 cm With handwritten note from the Folch Collection

Cinnabar with Dolomite
	RM14L3: Well formed Cinnabar crystals in a vug, with Quartz and Dolomite. The Folch label advises about the presence of Calomel (Calomelanos) as “small crystals inside the geode” with brown yellowish tones, but after analyses it has been demonstrated that it is Dolomite. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (±1979) Specimen size: 4 × 3.8 × 2.5 cm Main crystal size: 0.3 × 0.2 cm With handwritten note from the Folch Collection

	Cinnabar with Quartz
RQ7K9: Lively red crystals, good brilliance, that contrast on a snowy Quartz matrix. Pozo de San Teodoro, Almadén, Ciudad Real  Spain Specimen size: 7.2 × 4.5 × 1.4 cm Main crystal size: 0.5 × 0.4 cm With handwritten note from the Folch Collection

Cinnabar with Calcite
	RM36I7: Groups of small crystals of excellent color and luster that contrast with a matrix rich in Quartz. Pozo de San Teodoro, Almadén, Ciudad Real  Spain Specimen size: 5.8 × 4 × 3.3 cm With handwritten note from the Folch Collection

	Cinnabar with Dolomite
RQ14H8: Crystals, being small, have good color, luster and transparency and they strongly contrast with the white Dolomite where they are placed. Pozo de San Teodoro, Almadén, Ciudad Real  Spain Specimen size: 4 × 3.4 × 2.9 cm Main crystal size: 0.4 × 0.3 cm With handwritten note from the Folch Collection	Front Top

Cinnabar
	RE76F8: The crystals are small but the color and brilliance are exceptional. Folch found it at the Almadén Mine in 1923. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (1923) Specimen size: 6.2 × 4.2 × 3 cm Main crystal size: 0.4 × 0.3 cm With handwritten note & record from the Folch Collection

	Cinnabar
RF47F8: A splendid miniature with perfect growth of the crystals, in which the faces of the rhombohedron dominate. The color and brilliance are excellent. Folch found it at the Almadén Mine in 1923. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (1923) Specimen size: 3.1 × 2 × 1.5 cm Main crystal size: 0.4 × 0.4 cm With handwritten note & record from the Folch Collection

Cinnabar
Front Top	RR16I7: Parallel growth of rhombohedral crystals. They have a considerable size for the locality and present good color and luster, even considering the long time passed since the specimen was mined. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (±1979) Specimen size: 2 × 1.4 × 1.1 cm With handwritten note from the Folch Collection

	Cinnabar with Dolomite
RQ17K9: Excellent miniature, very representative of the Almadén specimens. Showing well defined rhombohedron crystals, some of them with parallel growth. On matrix. Pozo de San Teodoro, Almadén, Ciudad Real  Spain (±1978) Specimen size: 3.0 × 1.8 × 1.4 cm Main crystal size: 1.0 × 0.8 cm With handwritten note from the Folch Collection	Front Top

Pyromorphite
	RG48F9: An aerial and esthetical group with dramatic color zoning near the top. The crystals are large and have a few common characteristics of the Horcajo specimens. The tips, even considering a beginning of cone growth, are perfectly flat. Another historical sample, with a lot of years on its back, when Sr. Folch purchased it in 1923 from a miner at the locality. El Horcajo, Ciudad Real  Spain (1923) Specimen size: 3 × 2.3 × 1.7 cm With handwritten note & record from the Folch Collection Fluorescent long & short UV

	Pyromorphite
RA88G0: A typical specimen from El Horcajo. Floating, with groups of parallel prismatic crystals forming walls. Crystals are grass green colored, with typical zones and changes of color near the tips. El Horcajo, Ciudad Real  Spain Specimen size: 5.7 × 2.8 × 2.3 cm With handwritten note from the Folch Collection	Front Rear

Pyromorphite
	RK88G2: Groups of prismatic crystals with the edges lightly curved. Some crystals are partially covered with and have inclusions of a mineral described as Litharge on the label, but we can't confirm that because we have not analyzed the mineral to certify it. El Horcajo, Ciudad Real  Spain Specimen size: 5.9 × 4.6 × 3.3 cm Main crystal size: 1 × 0.3 cm With handwritten note & record from the Folch Collection Fluorescent long & short UV

Bismuth

RA26G8: An historical sample, with a Folch’s autograph note, exactly detailing the point of the mine where it was mined, the gallery and the level and also the month and the year (1959). The sample is a close group of bright deformed and grained crystals, which are sharper in a zone rich on Quartz. Mina Dolores, Nivel 60, Galería Sur, Pozoblanco, Córdoba  Spain (1959) Specimen size: 4.7 × 3.4 × 3.7 cm With handwritten note from the Folch Collection