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Fluorescent Minerals : Page 2
Daylight specimens are in Minerals A-L and Minerals M-Z.
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.
You are now on Page 2. We have another page of fluorescent minerals (Please click here to get to Page 1).
Assortment - 5 pieces - Franklin, NJ. Clockwise from top left:
Diopside (FL blue-white ***);
Calcite (FL reddish **) in Dolomite (FL purplish-red *);
Hardystonite (FL blue-violet **) in Calcite (FL red-orange ***);
Clinohedrite (FL orange ***) w/ Willemite (FL green ***) and Hardystonite;
Hydrozincite (FL blue-white ***).
Largest specimen is about 4" x 3". The clinohedrite is about 1 3/4" x 1 1/4".
#F430.... $65.00
Ship. wt. 3.5 lbs.
Calcite & Dolomite - Franklin, NJ. "Crazy Calcite" from the Buckwheat.... calcite (FL bright orange-red, SW) with dolomite (FL burgundy-red, SW). Somewhat unusual at the Buckwheat. In a decently strong SW lamp, these are quite nice and resemble glowing embers on a deeper-red background.
Two big specimens for one low price.
Size: each is approx. 5" x 4" across display face. Specimen on left is thicker, weighing about 3 lbs. Specimen on right is just over 2 lbs.
Can ship in a Priority Flat Rate box with a couple other specimens for $10.70 in the USA.
#F435 .... $25.00
Ship. wt. 6 lbs.
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
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
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 axinite in this piece is so bright that we were able to use a short exposure.
Those who know minerals understand that axinite in its pure state is colorless or white. Experienced Franklin collectors also realize that the intensity of Franklin axinite tends to be inversely proportional to the depth its tan color in daylight. That tan color is likely due to iron impurities (and perhaps excess Mn); iron, as well as Mn in excess, is known to quench fluorescence. Thus, the most brilliantly-fluorescent specimens of axinite tend to be the ones that beginners most easily mistake for calcite.
The axinite here does have an extremely subtle hint of tan, but it looks white at first glance. It does not have the "flash" characteristic of calcite. That's because it is not calcite. Here's a Franklin axinite of quality seldom offered on the market. The assemblage has that distinctive appearance. There is a lavender mineral that appears to be grossular, or possibly hodgkinsonite. The gray may or may not be native lead.
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).
There really aren't many decent margarosanites on the market in this price range. This one has really great color.
Specimen weight is approx. 6 ounces.
Size is about 2 inches by 1 3/4 inches.
Brightness: ** to ***
#F422 ... $400.00
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. "Wispy" willemite (FL brilliant green SW) with calcite (FL red SW). Another very bright, very striking piece. Display face approx. 3 1/4" x 2 1/4". Ship wt. 1.6 lbs.
Brightness: ***
#F393 ... $25.00
Willemite & Calcite - Franklin, NJ. Cut and polished halves or slabs, sawn from the same rock. The backs are rough and show weathered surface; the fronts have a matte to medium gloss polish.
The pieces do not stand up by themselves but would sit up nicely if you had a pair of easels.
Ship. wt. 3 lbs.
#F428 ... $35.00
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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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".
Brightness Grades:
* = Weak (Scapolite, Microcline).
Requires a powerful UV lamp and well-adjusted eyes in a darkened room. Don't ignore this category; some of the nicest color combinations are here.
** = 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 ("***").