Mineral Specimens with Calcite

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109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
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HECK-047 - Danburite with Calcite and Gypsum - $ 500
Charcas, San Luis Potosi, Mexico

small cabinet, 9.4 x 5.4 x 4.8 cm
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ex.  Richard Heck

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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047a.jpg]
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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047b.jpg]
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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047c.jpg]
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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047d.jpg]
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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047e.jpg]
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Danburite with Calcite and Gypsum from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK047f.jpg]

A large , lustrous and translucent, light pink, 9 cm-long danburite crystal is nearly covered by scalenohedrons of lustrous and translucent, yyellow-amber-colored calcite crystals to 2.6 cm in length. There are even a few crystals of glassy and gemmy gypsum to 1.5 cm across. The calcite crystals fluoresce a rich orangey purple color. Overall, a very unusual and dramatic combination piece!


HECK-049 - Quartz with Calcite - $ 250
Santa Eulalia, Chihuahua, Mexico

small cabinet, 7.8 x 7.2 x 6.4 cm
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ex.  Richard Heck

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Quartz with Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK049a.jpg]
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Quartz with Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK049b.jpg]
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Quartz with Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK049c.jpg]
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Quartz with Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK049d.jpg]
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Quartz with Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK049e.jpg]

A cluster of long prismatic , lustrous crystals of quartz, to 5 cm in length, have been heavily included by chlorite, thus rendering the crystals a deep olive-green color. The back side of the specimen is covered by lustrous , white, calcite crystals, to 1 cm across. Great color contrast, and as a bonus the calcite fluoresces a purple orange.


HECK-051 - Calcite - $ 900 SOLD
Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 9.9 x 8.4 x 5.2 cm
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ex.  Richard Heck

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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051a.jpg]
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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051b.jpg]
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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051c.jpg]
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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051d.jpg]
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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051e.jpg]
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Calcite from Ojuela Mine, Mapimi, Durango, Mexico [db_pics/heck/HECK051f.jpg]

A superb calcite for this classic locale, with unusually large and sharp crystals showing phantoms inside. Emplaced in of a vug of hard gossan matrix are rhombohedrons, to 3.3 cm across, of lustrous and translucent calcite. The calcite rhombs are arranged in a step growth pattern , very dramatically


HECK-052 - Galena and Calcite - $ 2400 SOLD
Naica, Chihuahua, Mexico

cabinet, 10.9 x 9.9 x 7.4 cm
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ex.  Richard Heck

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Galena and Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK052f.jpg]
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Galena and Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK052c.jpg]
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Galena and Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK052d.jpg]
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Galena and Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK052e.jpg]
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Galena and Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK052f.jpg]

An outstanding galena specimen from this very classic locale, where galena was common but specimens such as this level, were never common. Large, well formed, cubeoctahedrons of galena, to 4 cm across , are associated with scalenohedrons of lustrous and translucent, milky white crystals of calcite to 1.8 cm in length. The calcite fluoresces a brilliant, rich orange color. We have had galenas of such size and style before, but the settign against white, crystallized calcite matrix is just much more special! Super combo specimen!


HECK-054 - Calcite (twinned) - $ 200
Mina Salaverna, Zacatecas, Mexico

miniature, 5.5 x 5.2 x 4.8 cm
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ex.  Richard Heck

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Calcite (twinned) from Mina Salaverna, Zacatecas, Mexico [db_pics/heck/HECK054a.jpg]
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Calcite (twinned) from Mina Salaverna, Zacatecas, Mexico [db_pics/heck/HECK054b.jpg]
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Calcite (twinned) from Mina Salaverna, Zacatecas, Mexico [db_pics/heck/HECK054c.jpg]
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Calcite (twinned) from Mina Salaverna, Zacatecas, Mexico [db_pics/heck/HECK054d.jpg]

This specimen features lustrous and translucent, tan colored crystals. One is a twinned , sharp crystal of 3.5 cm in length, right in front, of unusual habit.


HECK-057 - Calcite - $ 400
Charcas, San Luis Potosi, Mexico

small cabinet, 7.4 x 4.8 x 3.8 cm
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ex.  Richard Heck

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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK057a.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK057b.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK057c.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK057d.jpg]

This matrix calcite specimen exhibits the classic "poker chip" habit for which this locality is justly famous. Tabular and rounded, lustrous and translucent, milky white crystals of calcite to 5 5 cm across exhibit parallel growth. Very minor contact at the terminal edges of a small crystal and a large crystal are insignificant as the piece is otherwise complete all around, and very aesthetic for the size


HECK-058 - Fluorite and Calcite - $ 400
San Martin, Zacatecas,Mexico

miniature, 4.8 x 4.5 x 3.1 cm
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ex.  Richard Heck

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Fluorite and Calcite from San Martin, Zacatecas,Mexico [db_pics/heck/HECK058a.jpg]
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Fluorite and Calcite from San Martin, Zacatecas,Mexico [db_pics/heck/HECK058b.jpg]
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Fluorite and Calcite from San Martin, Zacatecas,Mexico [db_pics/heck/HECK058d.jpg]
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Fluorite and Calcite from San Martin, Zacatecas,Mexico [db_pics/heck/HECK058e.jpg]

Glassy and gemmy cubes of pastel-green fluorite, to 2 cm across are wreathed by a druse of sparkling, white calcite. Rising from the back of the specimen is a lustrous and translucent white calcite crystal, measuring 2 cm in length. The calcite fluoresces a vivid, bright orange and the fluorite, a rich, deep purple. Gorgeous, and really elegant, this is a miniature of rare quality even from this mine which once produced specimens by the thousands


HECK-059 - Fluorite with Calcite - $ 300
Naica, Chihuahua, Mexico

small cabinet, 6.5 x 4.8 x 2.8 cm
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ex.  Richard Heck

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Fluorite with Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK059a.jpg]
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Fluorite with Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK059b.jpg]
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Fluorite with Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK059c.jpg]
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Fluorite with Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK059d.jpg]
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Fluorite with Calcite from Naica, Chihuahua, Mexico [db_pics/heck/HECK059e.jpg]

On a sulfide matrix are perched glassy and gemmy, pastel-green fluorite crystals to 2 cm across. Associated with the fluorite is a druse of white calcite. The calcite fluoresces a vivid orange and the fluorite a rich purple.


HECK-060 - Calcite - $ 400
Charcas, San Luis Potosi, Mexico

small cabinet, 5.8 x 4.8 x 4.4 cm
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ex.  Richard Heck

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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK060c.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK060b.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK060d.jpg]
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Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK060e.jpg]

This is a cluster of unusually prismatic, doubly terminated, lustrous and translucent crystals of calcite to 3.5 cm in length, intergrown into a radial spray. The crystals fluoresce a bright, vivid orange (due to manganese inclusions). Neat and unusual for the locale


HECK-066 - Gypsum on Calcite - $ 1500
Naica, Chihuahua,Mexico

small cabinet, 9.8 x 7.4 x 2.9 cm
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ex.  Richard Heck

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Gypsum on Calcite from Naica, Chihuahua,Mexico [db_pics/heck/HECK066a.jpg]
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Gypsum on Calcite from Naica, Chihuahua,Mexico [db_pics/heck/HECK066b.jpg]
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Gypsum on Calcite from Naica, Chihuahua,Mexico [db_pics/heck/HECK066c.jpg]
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Gypsum on Calcite from Naica, Chihuahua,Mexico [db_pics/heck/HECK066d.jpg]

A superb, doubly terminated, tabular, crystal that measures 9.8 cm across, this is glassy and gemmy. The colorless gypsum is elegantly arranged on a matrix of drusy , sparkling calcite as if on a pedestal - you could not ask for more perfect placement. Despite its softness this piece is nearly pristine, with only the most trivial wear. The totally clear and limpid gypsum crystal is offset even more under fluorescence whre the calcite is imparted with a brown hue and the gypsum transmits the UV light. Simply wonderful!


HECK-069 - Calcite - $ 1500 SOLD
Santa Eulalia, Chihuahua, Mexico

small cabinet, 9.4 x 8.8 x 5.4 cm
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ex.  Richard Heck

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Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK069a.jpg]
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Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK069b.jpg]
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Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK069c.jpg]
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Calcite from Santa Eulalia, Chihuahua, Mexico [db_pics/heck/HECK069d.jpg]

Remarkably, looking like a pincushion, this cluster of well formed calcite scalenohedrons has an earthy color but still somehow is one of the most dramatic calcites I have seen from here. The crystals, to nearly 2 inches in size, are SHARP and look carved and polished, almost, very lustrous with a dark tan color. On the underside of some of the lower crystals, a second generation of caclcite has formed. Considering how soft calcite is and the sheer number of crystal terminations, the fact that this specimen is absolutely pristine is amazing. I have seen smaller examples of this habit occasionally, but none this size and impact


HECK-072 - Calcite and Aurichacite - $ 900
Mina Ojuela, Mapimi, Mexico

cabinet, 12.5 x 8.9 x 5.9 cm
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ex.  Richard Heck

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Calcite and Aurichacite from Mina Ojuela, Mapimi, Mexico [db_pics/heck/HECK072a.jpg]
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Calcite and Aurichacite from Mina Ojuela, Mapimi, Mexico [db_pics/heck/HECK072b.jpg]
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Calcite and Aurichacite from Mina Ojuela, Mapimi, Mexico [db_pics/heck/HECK072c.jpg]
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Calcite and Aurichacite from Mina Ojuela, Mapimi, Mexico [db_pics/heck/HECK072e.jpg]

Nestled aesthetically in a vug of ocherous limonite, are calcite crystals heavily included by aurichalcite which gives them a superb, light teal-blue color. These are covered by a second generation of lustrous and translucent, colorless calcite, in crystals to 1.5 cm in length. In places on the limonite, are drusy clusters of lustrous and translucent, apple green conichalcite. Overall just a gorgeous piece with lots of subtle colors and color mixes. It has a small bit of damage, to a few peripheral crystals, but is otherwise in excellent condition. Unusual!


HECK-076 - Calcite (twinned) - $ 2250 SOLD
Naica, Chihuahua,Mexico

cabinet, 11.1 x 8.8 x 7.0 cm
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ex.  Richard Heck

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Calcite (twinned) from Naica, Chihuahua,Mexico [db_pics/heck/HECK076a.jpg]
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Calcite (twinned) from Naica, Chihuahua,Mexico [db_pics/heck/HECK076b.jpg]
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Calcite (twinned) from Naica, Chihuahua,Mexico [db_pics/heck/HECK076c.jpg]
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Calcite (twinned) from Naica, Chihuahua,Mexico [db_pics/heck/HECK076e.jpg]

A very geometrc specimen with several stout, twinned rhombohedrons of calcite, to 5.7 cm across. They are perched aesthetically, on a small amount of sphalerite. The calcite crystals are lustrous and translucent at the edges with a frosted colorless appearance. In fact the frosting is a later generation of gemmier calcite overgrowth on earlier formed calcite. The calcite glows a bright, vivid orange under a fluorescent light. Superb, and very classic in form for older finds here!


HECK-082 - Calcite (Twinned) - $ 400
Naica, Chihuahua, Mexico

small cabinet, 6.6 x 4.9 x 4.3 cm
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ex.  Richard Heck

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Calcite (Twinned) from Naica, Chihuahua, Mexico [db_pics/heck/HECK082a.jpg]
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Calcite (Twinned) from Naica, Chihuahua, Mexico [db_pics/heck/HECK082b.jpg]
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Calcite (Twinned) from Naica, Chihuahua, Mexico [db_pics/heck/HECK082c.jpg]

This cluster of tabular, lustrous and translucent, slightly manganoan-pink, rhombohedral calcites, to 4.5 cm in length, has formed a penetration twin. The specimen is SUPER fluorescent with a magnificent, bright orange color under UV. Absolutely pristine and quite unusual for its sharpness, this is a floater specimen


HECK-085 - Danburite with Calcite - $ 250
Charcas, San Luis Potosi, Mexico

small cabinet, 9.4 x 6.5 x 5.7 cm
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ex.  Richard Heck

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Danburite with Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK085a.jpg]
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Danburite with Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK085b.jpg]
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Danburite with Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK085c.jpg]
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Danburite with Calcite from Charcas, San Luis Potosi, Mexico [db_pics/heck/HECK085d.jpg]

Two danburite crystals, to 8 cm in length, are the host for two, doubly-terminated, lustrous and translucent calcite crystals to 5 cm in length. The larger danburite crystal is glassy , with a super gemmy brightness and luster to it! The calcites present from the front, complete, though they have some portions missing or contacted on the backside. An excellent, rare combination piece.



(click on a page number to go to that page:)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
199 200 201 202 203 204 205 206 207 208

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