• Calcite
  • Calcite


$3,500.00   €2,861  £2,470.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC11333
The Banana Slide was a richly mineralised fault zone at 400 m depth, extending some 1.6 km to the east of Egremont and could be accessed from several adjacent mines.  This specimen is from Haile Moor mine near Egremont and based solely on the habit, size, colour and lustre of the Calcite crystals, this could be from no where else, a Banana Slide classic!  Interestingly, the Calcite habit gradually changed traversing along Banana Slide, with large nail-head crystals such as these at one end and fine, almost acicular scalenohedral crystals at the opposite end.  The entire fault zone was richly crystallised and miners would work in their spare time extracting the crystals to sell.  This spectacular specimen comprises of approximately ten tightly packed adjacent crystals, all of nail-head habit with trigonal, Mercedes-type flattened pyramidal terminations.  The terminations are of quite transparent colourless Calcite, have vertically orientated fine striations and grade to brick-red prisms coloured by finely disseminated Hematite inclusions. The terminations, viewed with a x5 loupe, contain delicately-structured plumes of a black mineral, most likely manganese.  Amongst the crystals is single deep cavity, seemingly where a crystal should have developed, but obviously did not.  This is a wonderful nail-head Calcite from the evocatively named Banana Slide Fault Zone in West Cumbria.


7.5 × 10.4 × 9.5 cm
Banana Slide, Haile Moor Mine, Egremont, Cumbria, England, Europe

Minerals on Specimen

Minerals on specimen

Related Mineral Specimens

Arsenopyrite with Sphalerite, Quartz and Calcite
 Trepca Complex, Trepca Valley, Kosovska Mitrovica, Kosovo, Europe
An attractive arrangement of metallic silvery crystals of Arsenopyrite with some black...
 Egremont, Cumbria, England
Excellent specimen of gemmy 'nailhead' terminated Calcite crystals from the Egremont Iron mining...
Calcite included by Boulangerite
 Herja Mine, Baia Mare, Maramures Co, Romania, Europe
An excellent display specimen ball of colourless Calcite included by metallic grey hairs of...
Apophyllite with Calcite
 St. Andreasberg, Harz, Lower Saxony, Germany, Europe
Well formed pink to colourless terminated crystals of Apophyllite measuring to 1.2cm forming...