Neupet@aol.com on thu 24 oct 96
Does anyone know a source for this? I appreciate any help that someone can
give.
Thanks,
Lynne Berman
Jun-ichi Inagaki on fri 25 oct 96
At 18:00 96/10/24 EDT, you wrote:
> ----------------------------Original message----------------------------
> Does anyone know a source for this? I appreciate any help that someone can
> give.
>
Lepidolite is a lithium mica It is used as a raw material in glass and
ceramics.
KLi2Al(Si4O10)(OH)2
Lithium-bearing minerals petalite and spodumene are also used as flux.
Another Lithium source is amblygonite, a complex lithium-aluminum fluophosphate.
(AlF)PO4
it is as fluxing ingredient in opaque glazes.
Typical analyses.
Lepidolite Amblygonite
(%) (%)
Li2O 4.65 8.48
K2O 10.33 0.30
Na2O 0.13 1.63
SiO2 52.89 5.16
Fe2O3 0.19 0.02
P2O5 54.42
F 2.67
LOI 0.66 4.80
supplyer
Foot Mineral Co.
Lithium Corp. of America
Ceramic Color & Chemical Mfg. Co.
///////////////////////////////////////
Jun-ichi INAGAKI
Mie Ceramic Research Institute / IGA branch
inagaki@mie-iri.tsu.mie.jp
(TEL) +81-595-44-1019 / (FAX) 44-1043
Talya Baharal on sat 11 apr 98
-------------------
Is there anybody out there who would be interested in seeling me some
lepidolite?
Gene Gnida
914-658-3539 or e-mail or snail mail
P.O.Box 308, 265 Old Post Road
Rifton, NY 12471
Ron Roy on mon 13 apr 98
Hi Gene,
Just in case you cannot find any - I am confident I can duplicate your
glaze with spodumene. Worth a try and I would welcome the opportunity to
see if it can be done.
I do need what ever recipe you are using.
>----------------------------Original message----------------------------
>-------------------
>Is there anybody out there who would be interested in seeling me some
>lepidolite?
>
>Gene Gnida
>914-658-3539 or e-mail or snail mail
>P.O.Box 308, 265 Old Post Road
>Rifton, NY 12471
Ron Roy
93 Pegasus trail
Scarborough Otario
Canada M1G 3N8
Phone: 416-439-2621
Fax: 416-438-7849
Web page: Home page http://digitalfire.com/education/people/ronroy.htm
ILENE MAHLER on sun 12 aug 01
I am going no-mail for a while anyone sending messages on how to find
and buy this chemical please e-mail privately with this info...Thanks in
Advance ..Ilene from Conn soon to be for a while Ilene from Calif
Ababi on wed 13 aug 03
The=B4" Glaze addict" has found he might buy lepidolite.
I would like to hear about your experience with this material. I wonder
if it will diversify my strontium Kno CaO bases (some with cryolite
while others with feldspar soda)
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
SCOTT YEIP on sun 4 apr 04
Is this material still available? Does anyone know of a source?
Amy
_________________________________________________________________
MSN Toolbar provides one-click access to Hotmail from any Web page – FREE
download! http://toolbar.msn.com/go/onm00200413ave/direct/01/
Frances Merrill on sun 4 apr 04
According to old, old card file that I started 25+ years ago and have =
not used in 20 yr.: Lepidolite -- LiKAlF2 Si3O4 -- Lithium =
potassium fluoaluminum silicate -- a source of Lithium -- possible =
substitutes: Petalite, Amblygonite -- on the back of the card I have =
listed "Paramount" as a source -- I have no idea of who or where that =
is -- hope this gives you a starting point for a search -- sorry I =
can't be more help
Robert Merrill -- Valley View, Texas
fmerrill@ntin.net
Zoe Johnson on sun 4 apr 04
Lepidolite is a pinkish lithium mica. It is frequently found in granitic
pegmatites. Often associated with spodumene or tourmaline. In New Mexico,
it was produced at the Harding Mine and is still found there in rubble.
The Harding is now owned by UNM and is used to train geology students.
Lepidolite is mined in San Diego, California and Brazil. It is a lovely,
attractive mineral. At last week's rock show, there were several vendors
selling specimens from San Diego.
zoej
--On Sunday, April 04, 2004 4:10 AM +0000 SCOTT YEIP wrote:
> Is this material still available? Does anyone know of a source?
> Amy
>
> _________________________________________________________________
> MSN Toolbar provides one-click access to Hotmail from any Web page ? FREE
> download! http://toolbar.msn.com/go/onm00200413ave/direct/01/
>
> _________________________________________________________________________
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Zoe Paddy Johnson
Analyst Programmer 3
Fred Hagen on mon 3 oct 05
I'm wanting to use one of Warren MacKenzie's glazes which has as a major ingriedient Lepidolite. I can't find that ingriedient in any of my supplier catologs. Can anyone tell me where to find it --or is there is a substitute or perhaps it goes by another name?
Thanks.
Fred Hagen
Hank Murrow on mon 3 oct 05
On Oct 3, 2005, at 7:27 AM, Fred Hagen wrote:
> I'm wanting to use one of Warren MacKenzie's glazes which has as a
> major ingriedient Lepidolite. I can't find that ingriedient in any of
> my supplier catologs. Can anyone tell me where to find it --or is
> there is a substitute or perhaps it goes by another name?
Dear Fred;
Lepidolite is mined and manufactured in the former Rhodesia, with whom
we have trade interdictions. Your only hope is someone's remaining
supply, though I have scarfed up as much of that as I could find.
Meanwhile, try subbing with Low Melt Spodumene from TANCO. I get mine
at Georgies in Portland OR. Best use a glaze calc program to figure the
substitution. Worked great on my shinos when I had to sub.
Cheers, Hank
www.murrow.biz/hank
Tom Buck on mon 3 oct 05
Fred:
Lepidolite is a Lithium mineral (lithium mica) and chemically is
described as a fluosilicate of potassium, lithium, and aluminum that
occurs in "pegmatites" (magma pipes that reach the surface). so this
mineral is not found in large orebodies, and when found the "mine" is soon
worked out.
you can make subs using spodumene (lithium aluminum silicate) or
by using petalite (lithia.alumina.silica, Li2O.Al2O3.8SiO2, mineral).
to do so you will need current analyses of these minerals, and a
glaze calculation program (or someone doing glzcalc). Or without the
mineral analyses you can use Ian Currie's 5x7 grid method and chances are
good that you will get a workable glaze.
good pots peace Tom
Tom Buck ) -- primary address.
"alias" or secondary address.
tel: 905-389-2339 (westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street, Hamilton ON L8T 3E1 Canada
Timothy Langholz on mon 31 dec 07
Does anyone have any lepidolite sitting around they would like to sell?
Tim in Iowa
tim@langholzpottery.com
Hank Murrow on mon 31 dec 07
On Dec 31, 2007, at 4:12 AM, Timothy Langholz wrote:
> Does anyone have any Lepidolite sitting around they would like to
> sell?
>
> Tim in Iowa
DITTO!
hmurrow@efn.org
Thanks, Hank
www.murrow.biz/hank
Edouard Bastarache Inc. on mon 31 dec 07
Sorry guys,
I only have about 300 grams left to make glaze
tests.
http://lepidolite.blogspot.com/
"The scintillating effects may be due to
small crystals in the glaze... microcrystals
which reflect light under various directions...
That can also be due to undissolved
particles at the time of baking... or to
small gas bubbles dispersed in the glaze...
Smart.Conseil"
http://lepidolitereds.blogspot.com/
Gis la revido,
(A la revoyure)
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
http://www.flickr.com/photos/30058682@N00/
http://myblogsmesblogs.blogspot.com/
----- Original Message -----
From: "Hank Murrow"
To:
Sent: Monday, December 31, 2007 9:40 AM
Subject: Re: lepidolite
> On Dec 31, 2007, at 4:12 AM, Timothy Langholz
> wrote:
>
>> Does anyone have any Lepidolite sitting around
>> they would like to
>> sell?
>>
>> Tim in Iowa
>
> DITTO!
>
> hmurrow@efn.org
>
> Thanks, Hank
> www.murrow.biz/hank
>
> ______________________________________________________________________________
> Clayart members may send postings to:
> clayart@lsv.ceramics.org
>
> You may look at the archives for the list, post
> messages, or change your
> subscription settings here:
> http://www.acers.org/cic/clayart/
>
> Moderator of the list is Mel Jacobson who may be
> reached at melpots2@visi.com
>
>
>
> --
> No virus found in this incoming message.
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> 2007-12-29 13:27
>
>
Ron Roy on thu 3 jan 08
Hi Tim.
Supplier from an old Ceramic Industry materials handbook (Jan 95) lists
Cabot Performance Materials, 144 Holly Road, Boyer Town, PA, 19512, (610)
387-1500.
If you would like to try a spodumene substitution instead I can do it for
you - just send me the recipe - but that will leave out the fluorine.
RR
>Does anyone have any lepidolite sitting around they would like to sell?
>
>Tim in Iowa
>
>tim@langholzpottery.com
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Lee on thu 3 jan 08
Edouard's book has several substitutions for it. Mine copy is buried somewhere.
--
Lee in Mashiko, Tochigi Japan
http://mashikopots.blogspot.com/
"Tea is nought but this: first you heat the water, then you make the
tea. Then you drink it properly. That is all you need to know."
--Sen No Rikyu
"Let the beauty we love be what we do." - Rumi
Hank Murrow on thu 3 jan 08
On Jan 2, 2008, at 11:12 PM, Ron Roy wrote:
> Hi Tim.
>
> Supplier from an old Ceramic Industry materials handbook (Jan 95)
> lists
> Cabot Performance Materials, 144 Holly Road, Boyer Town, PA, 19512,
> (610)
> 387-1500.
>
> If you would like to try a spodumene substitution instead I can do
> it for
> you - just send me the recipe - but that will leave out the fluorine.
Dear Ron;
I used to use Lepidolite(when it was available) in my Shinos as a
source of Lithium. In tests at the Smithsonian Conservation Labs with
Pamela Vandiver, we found that the Fluorine may enhance the transfer
of Fe from the clay body to the surface of the glaze, thus making the
Fe available for re-oxidation during the cooling phase of the firing.
It also causes some bubbling/pinholing as it leaves the glaze. Later,
I used(and continue to use) Low Melt Spodumene from Tanco in Canada.
To re-introduce the fluorine, I sometimes use Cryolite in 1% or less
amounts. Color is intense, along with some bubbling, mostly under the
footring on the inside where the glaze is thicker.
Cheers, Hank
www.murrow.biz/hank
Edouard Bastarache Inc. on thu 3 jan 08
Hank,
here is a sub using GlazeChem and cryolite to
supply
fluorine, but I do not know if the amount of
fluorine is right :
Custer feldspar 4.584
Cryolite 15.051
Lithium carbonate 11.8
Dolomite 1.455
Whiting 0.87
Alumina hydrate 35.226
Silica 51.116
Red iron oxide 0.19
Gis la revido,
(A la revoyure)
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://www.flickr.com/photos/potier/20321056/
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
Hank Murrow on thu 3 jan 08
On Jan 3, 2008, at 12:25 PM, Edouard Bastarache Inc. wrote:
> Hank,
>
> here is a sub using GlazeChem and cryolite to
> supply
> fluorine, but I do not know if the amount of
> fluorine is right :
>
> Custer feldspar 4.584
> Cryolite 15.051
> Lithium carbonate 11.8
> Dolomite 1.455
> Whiting 0.87
> Alumina hydrate 35.226
> Silica 51.116
> Red iron oxide 0.19
Dear Edouard;
I am afraid that the Cryolite amount would cause huge bubbling in a
glaze. The mole equivalents of Fluorine in Lepidolite is 0.3882. I
used 15% Lepidolite in my original recipe, yielding 0.100 mole
equivalents of F, and the present recipe using Cryolite contains
0.101 mole equivalents of F. Sometimes I leave out the Cryolite in
the new recipe because of the bubbling. Slightly less intense
firecolor is the result.
Cheers, Hank
www.murrow.biz/hank
Ron Roy on sun 6 jan 08
Anyone using more than 2% lithium carb in a glaze should test that glaze
carefully on all the clay bodies they use.
I have seen many examples now if shivering and crazing in glazes with more
than 2% Lithium Carb.
Hank is right - using that much Cryolite is a good way to get crater glazes.
RR
> Hank,
>
>here is a sub using GlazeChem and cryolite to
>supply
>fluorine, but I do not know if the amount of
>fluorine is right :
>
>Custer feldspar 4.584
>Cryolite 15.051
>Lithium carbonate 11.8
>Dolomite 1.455
>Whiting 0.87
>Alumina hydrate 35.226
>Silica 51.116
>Red iron oxide 0.19
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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