Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery
bannerbannerbannerbannerbannerbanner

Identity of the stone

Posted by Aries Bael  
avatar
Aries Bael January 11, 2019 02:46AM
I would like to know what kind of stone is this. It is pearly white in color but when put in natural water it turns into crystal or colorless.
It is small as size as grain of bean. It also grow when put in water. When it break the small particle will grow into another small grain. Pleaese help me to identify this stone.





Edited 1 time(s). Last edit at 01/11/2019 03:22AM by Aries Bael.
avatar
Ted Hadley January 11, 2019 04:58AM
A synthetic concretion on quartz? It looks synthetic to me.

We need more info: hardness, cleavage, etc.
avatar
Aries Bael January 11, 2019 08:00AM
It is hard. It is not also squishy in water.
We found it placed in the bottle that has a japanese marking on it..
avatar
Aries Bael January 11, 2019 08:05AM
It is hard. It is not also squishy in water.
We found it placed in the bottle that has a japanese marking on it..
I thought the japanese brought this here in the philippines during world war 2.
avatar
Wayne Corwin January 11, 2019 09:12AM
they are modern 'gel-beads' for growing plants.
soak in water overnight and they will squish.
avatar
Aries Bael January 11, 2019 09:27AM
It has been soak in water since 2016.. and it never squish but produce more crystals..
avatar
Frank K. Mazdab January 11, 2019 07:33PM
It's been soaking in water for almost 3 years and over that time it's been growing? And there's Japanese writing on the bottle? I think this is the premise of an old horror/monster movie I saw once...
avatar
Reiner Mielke January 11, 2019 07:39PM
Obviously manmade something and not a mineral.
avatar
Wayne Corwin January 11, 2019 08:40PM
Has Special Agents Fox Mulder and Scully been notifyed?
avatar
Kelly Nash January 11, 2019 09:25PM
They look like tapioca pearls.
avatar
Alfredo Petrov January 11, 2019 09:39PM
Silica gel. Very commonly used in dehydrated japanese food products. Think of it as synthetic opal, but made to keep food dry, not for jewelry.



Edited 1 time(s). Last edit at 01/11/2019 09:40PM by Alfredo Petrov.
avatar
Aries Bael January 12, 2019 12:54AM
Sir Alfredo Petrov, I think so. It characterictics much of what an opal has.
Especially as what the description of an opalir shows some of it. Like when it is soak in water in changes its color to crystal. It is natural color is milky white. But the size of it is so small. Like a small pea size.
If it is synthetic. I would like to ask if synthetic opal can change its color when place in a water?
Pls give me more info before I will dispose if it has no value at all..

Thank you
avatar
Reiner Mielke January 12, 2019 01:02AM
It is not synthetic opal. Not sure why Alfredo compared it to that other than they both contain silica, water and are amorphous. Sorry to have to tell you, but what you have is worthless.
avatar
Donald B Peck January 12, 2019 01:28AM
And they are a two dimensional array of beads. I think Alfredo was referring to the apparent structure, not saying it was opal (of any type).
avatar
Aries Bael January 12, 2019 09:16AM
Ok sirs. But please enlighten me why is it that if this beads was put in a water it changes its color to crystal.
What material they have probably used to make this thing? For sure it is not plastic because it doesnt burn. Please educate me more about this. Thank you so much..
If you have also some link please if you dont mind give me for more info..
avatar
Ed Clopton January 12, 2019 02:00PM
Opal naturally contains some water in its structure. If it contains a lot of water it can go from being transparent ("crystal"?) when hydrated to translucent or opaque when dehydrated and back to transparent when rehydrated. Maybe that's what is going on here. I can imagine that happening especially with a synthetic opal or opal-like material.

A seller on eBay whom I generally trust has been listing little 1-2 mm transparent opal beads from a hot-spring locality in Japan (https://www.ebay.com/itm/OPAL-OOLITE-RARE-Tateyama-JAPAN/312408038944?hash=item48bcf85e20:g:2xMAAOSwYd5cKWgT) that appear to have a grain of sand as a nucleus. I don't know anything more about them and have not seen one in person, but as I said, I have dealt with this seller for years and tend to trust his information. Additionally, I doubt that these are the same item the original poster described, but mention them here to indicate that such things (may) really occur in nature.
avatar
Thomas Lühr January 12, 2019 02:42PM
Maybe this link helps
https://en.m.wikipedia.org/wiki/Silica_gel
avatar
Aries Bael January 12, 2019 05:51PM
Sir Ed Clopton. That is exactly what is happening to these beads. When put in water it became transparent but if taken out of water it became opaque milky white in color. Thank you sir for more info..
avatar
Wayne Corwin January 12, 2019 06:38PM
Aries
What is the hardness of them?
avatar
Aries Bael January 13, 2019 05:39AM
Sir Wayne I don't know how to determine the hardness. Can you give me some knowledge on how to determine it sir..
avatar
Wayne Corwin January 13, 2019 06:05AM
The Mohs Hardness Test
avatar
Aries Bael January 14, 2019 06:33AM
I think its 5 to 7 sir..
Then its fracture is uneven...
avatar
Aries Bael January 14, 2019 09:29PM

avatar
Aries Bael January 15, 2019 10:46PM
It is not like gel.. Its hard and not soft..
I know what is gel.. Its very obvious because when you hold it it is soft but this is not like that..
avatar
Aries Bael January 15, 2019 10:47PM
I know also what is silica. Of course because you always find it in evey products like shoes or even foods..
avatar
Aries Bael January 15, 2019 10:55PM
It is knew to me. I was just curious about it because of it characteristics. And it is hard like a stone or ceramic not plastic or gel.
But it changes its color from opaque milky white to transparent when put on water.. And it is also produces more like it.. It seems that its alive.. Plant gel beads are also soft and.. And worn out then wasted but this beads or stone is different. That is why I am intrigue about it..
avatar
Doug Daniels January 16, 2019 01:05AM
If it is indeed silica gel, then when you put it in water, it will absorb some. That water has to go somewhere, which would be into whatever structure the bead had. It would then likely expand, giving the impression that it is growing . I'm sure the ones you've put in water and that have "grown", have only gotten to a certain size, then stopped "growing".
Sorry, only registered users may post in this forum.

Click here to login



bannerbannerbannerbannerbannerbanner
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 16, 2019 14:13:46
Go to top of page