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Fluorescent Minerals : Page 2
Fluorescent cabochons are in the cabochons section.
Fluorescent sets are in the mineral sets section.
Important: Fluorescent minerals require a special ultraviolet lamp to view them (normally, a short-wave UV lamp). A good lamp seems quite costly to a beginner, but the lamp represents a key investment in this fascinating hobby.
The color response of your computer's monitor may not be the best representation of the photographs. The colors shown in the photos, at least as they appear on our office monitor, are the most accurate representations we were able to capture with the limitations of the camera.
Abbreviations:
FL = "fluorescent", "fluoresces", "fluorescence";
LW = "Long-Wave" (ca. 320 to 370 nm);
MW = "Mid-Wave" (ca. 302 to 312 nm);
PH = "Phosphorescent" (i.e., temporary glow after UV source is removed);
SW = "Short-Wave" (254 nm);
UV = "Ultra-Violet".
You are now on Page 2. We have another page of fluorescent minerals (Please click here to get to Page 1).
Clinohedrite, Willemite, Calcite with andradite & franklinite - Franklin, NJ.
This clinohedrite has a subdued, pumpkin-orange fl. in SW.
Display face approx. 2.5 x 1.5 inches. Ship. wt. 1.2 lb.
Brightness: ** (clino.), *** (will.)
#F385 .... $15.00
Calcite & Willemite in Rhodonite - Franklin, NJ.
Disp. face approx. 2 1/2" x 2 3/8".
Ship. wt. 0.8 lb
Brightness: ***
#F403 ... $10.00
Fluorite - Clay Center, Ohio. Brown in daylight, FL cream-white in SW. Disp. face approx. 2 x 3 inches. Both sides are displayable.
Brightness: **
#F390 .... $20.00
Hardystonite & Willemite in Andradite - Franklin, NJ. FL rich blue-violet, SW (hardystonite) with green (willemite).
Size is about 3.5 x 3 inches. Ship. wt. 1.3 lb.
Brightness: ** (hardy.) and *** (will.)
#F389 ........ $22.00
Hyalite opal - Princess Pat Mine, San Bernardino Co., CA. This specimen is very rich in hyalite and gives an almost uninterrupted display face of "icy" green glow in SW. Size approx. 2 3/4" x 1 3/4". Ship. wt. 0.6 lb.
#F414 ... $18.00
Manganaxinite & Willemite - Franklin, NJ. The fl. response of the axinite is unusually intense. In fact, it's so bright that one can easily mistake it for calcite, but this is not calcite. The mineral assemblage contains a purplish-pink mineral we intially thought to be glaucochroite, although it may instead be grossular. The rock also has andradite, hyalophane, and some dull gray inclusions that bear at least a passing resemblance to native lead.
The hyalophane has a very weak purple fl. as well, but you'll notice it doesn't show up in the fl. picture. This is because the axinite is so bright that we were able to use a short exposure. There are not many axinites around that are so bright they can overexpose a photo the way willemite can.
This is not the usual honey-colored variety of axinite that comes up on the market from time to time. The specimen for sale here is an assemblage that has disappeared into collections and seldom appears on the market. The axinite is very difficult to distinguish in daylight, because it is almost white. It does, however, wink out after the lamp moves past it (as does the willemite), rather than briefly phosphorescing as calcite does. Collectors having little or moderate experience tend to believe that manganaxinite must always have a noticeable tint of golden or peach in daylight; however, this belief is untrue. The hue can be so pale as to be unnoticeable. In fact, pure manganaxinite has no iron and is colorless to white.
Actual weight approx. 7 ounces.
Display area about 2" x 1 1/2". Ship. wt. 1 lb.
Brightness: ***
#F411 ... $125.00
Margarosanite & Willemite - Franklin, NJ. Margarosanite is highly sought-after and scarce on the market. This is the even scarcer pink-fluorescing variety. It is accompanied by moderate amounts of the more typical blue-white fl. variety. Both sides of the specimen are displayable, with the flatter side (shown in rightmost photo) having the larger expanse of "pink margarosanite".
The matrix is feldspar, probably hyalophane. There is a non-fl. pink mineral scattered throughout the matrix; it exhibits a platy, almost micaceous cleavage (note that hodgkinsonite has a perfect basal cleavage and is the same shade of pink; it would not be at all out of place in this assemblage).
This is the only margarosanite we've ever had for sale, other than a single thumbnail specimen a long time ago.
Specimen weight is approx. 6 ounces.
Size is about 2 inches by 1 3/4 inches.
Brightness: ** to ***
#F422 ... $329.00
Norbergite with Diopside - Ogdensburg area, NJ. From a site where there was construction. Bright, rich SW specimen. Main display face approx. 4 x 4 inches. At least two faces are displayable. Ship. wt. 3 lbs.
Brightness: ** to ***
#F391 ... $35.00
Scheelite - Princess Pat Mine, San Bernardino Co., California.
Fl. bright blue-white SW.
Disp. face shown is approx. 3" x 1 3/4".
Whole rock has "starry night" speckles of scheelite through it.
Ship. wt. 1.2 lbs.
#F413 ... $15.00
Sphalerite & Willemite - Sterling Hill, Ogdensburg, NJ. This came from the collection of a miner who seemed to specialize in this mineral assemblage.
Silvery sphalerite in "troostite" (local name for the brick-red variety of willemite). Good coverage and balance. The sphalerite fl. dull orange in SW, much better in LW (probably MW as well). Number YH-07 on back of specimen.
The normal-light photograph of the specimen does not capture the sparkle of the sphalerite as it's rotated in the light; specimen looks much better in real life.
This is a nice one.
Size approx. 5" x 3 3/4"
Ship. wt. 4.2 lbs.
#F419 ... $49.00
Sphalerite & Willemite - Sterling Hill, Ogdensburg, NJ. Assemblage is similar to F419, but not as much "troostite".
Size approx. 3 x 2 x 2 inches.
Ship. wt. 2.5 lbs.
Brightness: **
#F417 ... $29.00
Willemite & Calcite - Sterling Hill, Ogdensburg, NJ. Disp. face approx. 3" x 2 3/4". Ship. wt. 2 lbs.
Brightness: ***
#F396 .... $15.00
Back to Page 1 of Fluorescent Minerals for sale
Fluorescent minerals require a special lamp to view the colors you see in the photos. Most of the specimens shown above react to short-wave ultraviolet (SW UV or "UV-C"), which has a wavelength of 254 nanometers.
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Fluorescent Cabochons for sale - cut and polished from fluorescent minerals
Fluorescent Gallery of specimens sold in the past
Mineral Sets, Teaching, & Reference Minerals
Premium & Display Minerals for sale
Radioactive & Rare-Earth Minerals for sale
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Brightness Grades:
* = Weak (Scapolite, Microcline).
Requires a powerful UV lamp and well-adjusted eyes in a darkened room. Don't ignore this category; there can be many subtle and intricate colors.
** = Moderate (Fluorapatite, Hardystonite).
Many fl. species fall into this grade.
*** = Intense (Willemite, Scheelite).
The fluorescence has an almost electric quality when illuminated with UV.
Brightness Grades are somewhat subjective, but willemite and scheelite are almost always Grade 3 ("***").
Grade 2 can be displayed with either 1 or 3; however, try to display Grade 1 separately from Grade 3 specimens, or the former will be drowned out by the latter.
It is almost impossible to build a collection in which every specimen has the same brightness, unless one specializes in a single mineral from a single locality. Some collectors utilize separate display cases / shelves to get best results. Alternatively, if you have one display lamp, you can place the Grade 1 minerals closest to it, the Grade 2 minerals just a bit farther back, and the Grade 3 minerals farthest away.