Bolivia Part 2

Another new find from the Kami Mine, the same location that produced the fluorapatites on the previous page.  These specimens are plates of quartz, with a bright red coating of jeromite.  Jeromite is an arsenic, selenium, sulfur glass-- it has no definite crystal structure and as such is not considered a mineral. Periously, I had only seen single small crystals with coatings of this material-- these new examples are especially rich by comparison.  Admittedly, almost none are perfect-- there will be missing crystals here and there.  A number of the pieces also had ferberite associations, the lustrous black crystals contrast nicely with the bright jeromite. 

List
Grid
Page 1

JRB01 Ferberite with Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
9.4x 9.1x 7.5 cm
$3600

A beautiful specimen with a group of lustrous black ferberite crystals (the largest a twin) with a contrasting medley of arsenic bearing minerals- jeromite, orpiment on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.  









JRB02 Ferberite with Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
8.1x 7.0x 6.2 cm
$295

A beautiful specimen with a group of lustrous black ferberite a contrasting jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.  There are some rough areas, still a nice example from the find. 









JRB03 Ferberite with Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
8.6x 6.8x 5.4 cm
$385

A beautiful specimen with a group of lustrous black ferberite a contrasting jeromite and orpiment on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.  Contacted on the reverse, some shared quartz crystals. 









JRB04 Ferberite with Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
5.9x 5.0x 3.5 cm
$285

A beautiful specimen of lustrous black ferberite with a coating of contrasting bright orange jeromite and  on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples. Not perfect, but quite pretty. 











JRB05 Ferberite, Jeromite with Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
11.5x 8.2x 7.2 cm
$485

A very rich example of dark red jeromite on quartz and ferberite.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples. 







JRB06 Ferberite, Jeromite with Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
11.5x 7.6x 6.5 cm
$400

A nice specimen of lustrous black ferberite with a coating of contrasting bright orange jeromite and orpiment on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples. Not perfect, but quite colorful. 









JRB07 Ferberite, Jeromite with Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
10.5x 6.5x 7.5 cm
$385

A nice specimen of lustrous black ferberite with a coating of contrasting bright orange jeromite and orpiment on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I saw small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples. Not perfect, but quite colorful. 











JRB08 Ferberite with Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
7.6x 5.8x 6.1 cm
$265

A nice example of ferberite on quartz, with a dusting of orpiment.  The quartz crystals are not all complete.







JRB09 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
19.0x 14.0x 5.9 cm
$880

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  I would also say the color is a particular draw with these, as it's certainly better than the more common material with color caused by iron oxide, that comes from various worldwide localities .   







JRB10 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
21.0x 16.0x 6.8 cm
$850

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  I would also say the color is a particular draw with these, as it's certainly better than the more common material with color caused by iron oxide, that comes from various worldwide localities .   









JRB11 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
18.5x 12.0x 6.5 cm
$650

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  I would also say the color is a particular draw with these, as it's certainly better than the more common material with color caused by iron oxide, that comes from various worldwide localities .   







JRB12 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
14.0x 13.8x 7.5 cm
$580

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  I would also say the color is a particular draw with these, as it's certainly better than the more common material with color caused by iron oxide, that comes from various worldwide localities .   









JRB13 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
23.0x 10.5x 7.0 cm
$640

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  I would also say the color is a particular draw with these, as it's certainly better than the more common material with color caused by iron oxide, that comes from various worldwide localities .   









JRB14 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
15.5x 8.0x 9.5 cm
$585

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown. 









JRB15 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
14.0x 11.0x 5.6 cm
$495

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown.  







JRB16 Jeromite on Quartz, Arsenopyrite
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
10.1x 10.0x 5.9 cm
$395

A nice example of quartz with jeromite highlights, and silvery arsenopyrite.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.  All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown. 









JRB17 Jeromite on Quartz
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
11.0x 8.4x 4.7 cm
$295

A very rich example of jeromite on quartz.  The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples.
All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown. 







JRB18 Jeromite on Quartz (Japan Law Twin)
Kami Mine, Ayopaya Prov., Cochabamba Dept., Bolivia
12.3x 8.7x 7.5 cm
$355

A rich example of jeromite on quartz. This one has a Japan law twin (with some damage on the top left edge.) The "jeromite" is not actually a mineral-- it is an arsenic, selenium, sulfur glass that lacks a definite crystal structure (hence the "glass" term) best known from this mine.  In the past, I have seem small single quartz crystals coated with this orange-red material, but this discovery is the first time that I have seen such rich examples. All of these have at least some quartz crystals broken off, it is inescapable, though they display exactly as shown. 









Page 1
Click here to see New Bolivian Finds, Part 1