FMF - Friends of Minerals Forum, discussion and message board

I am fond of the gorgeously unscientific concept of “look and feel”. Apart from colour and shape, it is a combination of fractures, textures, luster, transparency, volume and mass and “consistency” of ...

Thanks for this mention and recommendation.
Very good point regarding the language! Big part of English vocabulary is from Latin anyway. The additional vocabulary needed to understand a scientific t ...

This is a fragment of the famous Ivigtut pegmatite.
We have an unusual fluorite: the red-brown concentric grains. It has a low content of the radioactive element thorium (Th).
The cryolite is norm ...

(...)
Maybe this topic would have to be moved to another thread.

hi Carles, I am fine. We could move all the inputs starting from Bob Harman - Apr 03, 2018 21:46

We could for example call th ...

Bob, Peter, Carles, thanks a lot for commenting around this interesting topic.
Normally I do not put the mass. Recently I have been looking on meteorites (where weight is more important than size), ...

Apropos the gorgeous baryte collection of Mr. Brouwer, I would like to share a much humbler piece I acquired recently. The interesting is the relatively exotic origin (I have no other minerals from th ...

Even if the colour might seem the most “obvious” property of many minerals, i.e. the one our eyes detect immediately, by far in most cases it is not an inherent property of the given material. For ide ...

EUDIALYTE is one of my favorite minerals. In the following I would like to say a few words about its exciting history, composition and distribution.

In main lines I will re-use (semi-translate) ...

Back in the 90s when I was living in Denmark, the best show in the country was the one in Ry (Jutland). By then, the ones in Copenhagen were relatively weak. (at least for mineral collectors; they wer ...

(alternative title - Quasicrystals in Carbonaceous Chondrites)

It is such a beautiful thought that an evolution has taken place not only among living beings but also among minerals, and as Alfr ...

Fantastic images! I am specially fan of the one with pampas landscape like goethite inclusions.
As “traditional” mineral collectors often feel certain aversion against the cutting and polishing of st ...

Hi again, the type locality and the original (scientific) discovery of sodalite is exciting, although this is a topic of which you will find very little information on the “standard” info sources of I ...

Hi, it might be peripherical info only in the given context, but from the point of view of history of mineralogy there are many juicy details. The first scientific description of the mineral was not m ...

Thank you so much for sharing these images! This museum was almost “my second home”, especially in the very first years when I moved to Copenhagen with my father, still as kid, in 1986. I passed by pr ...

Dear FMFers,
I understand meteorites to be a kind of taboo subject in our forum, but I interpret this trend as mainly for avoiding the tedious discussions of "is this a meteorite?". The be ...

Author	Message
Topic: Mass on mineral labels?
kakov Replies: 7 Views: 11849	Forum: Off-Topic and Introductions Posted: May 11, 2018 14:35 Subject: Fulgurite, sea foam and further off-topics in a ‘weight-landscape’
kakov Replies: 7 Views: 11849	I am fond of the gorgeously unscientific concept of “look and feel”. Apart from colour and shape, it is a combination of fractures, textures, luster, transparency, volume and mass and “consistency” of ...
Topic: Minerales y Minas de España - Silicatos
kakov Replies: 2 Views: 16243	Forum: Mineralogical Literature Posted: Apr 12, 2018 05:30 Subject: Re: Minerales y Minas de España - Silicatos
kakov Replies: 2 Views: 16243	Thanks for this mention and recommendation. Very good point regarding the language! Big part of English vocabulary is from Latin anyway. The additional vocabulary needed to understand a scientific t ...
Topic: Collection of kakov
kakov Replies: 16 Views: 51970	Forum: Collection photos and Collector's page Posted: Apr 08, 2018 11:45 Subject: Radioactive fluorite and black cryolite
kakov Replies: 16 Views: 51970	This is a fragment of the famous Ivigtut pegmatite. We have an unusual fluorite: the red-brown concentric grains. It has a low content of the radioactive element thorium (Th). The cryolite is norm ...
Topic: Mass on mineral labels?
kakov Replies: 7 Views: 11849	Forum: Off-Topic and Introductions Posted: Apr 05, 2018 04:07 Subject: Re: Mass on mineral labels?
kakov Replies: 7 Views: 11849	(...) Maybe this topic would have to be moved to another thread. hi Carles, I am fine. We could move all the inputs starting from Bob Harman - Apr 03, 2018 21:46 We could for example call th ...
Topic: Mass on mineral labels?
kakov Replies: 7 Views: 11849	Forum: Off-Topic and Introductions Posted: Apr 04, 2018 05:50 Subject: Mass on mineral labels
kakov Replies: 7 Views: 11849	Bob, Peter, Carles, thanks a lot for commenting around this interesting topic. Normally I do not put the mass. Recently I have been looking on meteorites (where weight is more important than size), ...
Topic: Collection of kakov
kakov Replies: 16 Views: 51970	Forum: Collection photos and Collector's page Posted: Apr 03, 2018 08:13 Subject: Baryte, Uzbekistan
kakov Replies: 16 Views: 51970	Apropos the gorgeous baryte collection of Mr. Brouwer, I would like to share a much humbler piece I acquired recently. The interesting is the relatively exotic origin (I have no other minerals from th ...
Topic: Percentage of pigment
kakov Replies: 6 Views: 11351	Forum: Minerals and Mineralogy Posted: Mar 14, 2018 12:31 Subject: Re: Percentage of pigment
kakov Replies: 6 Views: 11351	Even if the colour might seem the most “obvious” property of many minerals, i.e. the one our eyes detect immediately, by far in most cases it is not an inherent property of the given material. For ide ...
Topic: Collection of kakov
kakov Replies: 16 Views: 51970	Forum: Collection photos and Collector's page Posted: Feb 21, 2018 13:53 Subject: Re: Collection of kakov - Eudyalite
kakov Replies: 16 Views: 51970	EUDIALYTE is one of my favorite minerals. In the following I would like to say a few words about its exciting history, composition and distribution. In main lines I will re-use (semi-translate) ...
Topic: Mineral Show in Copenhagen, Denmark
kakov Replies: 4 Views: 12486	Forum: Mineral Shows Posted: Feb 19, 2018 05:14 Subject: Re: Mineral Show in Copenhagen, Denmark
kakov Replies: 4 Views: 12486	Back in the 90s when I was living in Denmark, the best show in the country was the one in Ry (Jutland). By then, the ones in Copenhagen were relatively weak. (at least for mineral collectors; they wer ...
Topic: Percentage of minerals known
kakov Replies: 11 Views: 18600	Forum: Minerals and Mineralogy Posted: Jan 08, 2018 12:02 Subject: Re: Percentage of minerals known - The space-mineral collecting trip
kakov Replies: 11 Views: 18600	(alternative title - Quasicrystals in Carbonaceous Chondrites) It is such a beautiful thought that an evolution has taken place not only among living beings but also among minerals, and as Alfr ...
Topic: Super thin hematite inclusions in amethyst
kakov Replies: 22 Views: 42347	Forum: Micros & Macros - Images of Minerals Posted: Nov 10, 2017 12:40 Subject: Re: Super thin hematite inclusions in amethyst
kakov Replies: 22 Views: 42347	Fantastic images! I am specially fan of the one with pampas landscape like goethite inclusions. As “traditional” mineral collectors often feel certain aversion against the cutting and polishing of st ...
Topic: Historical Information About Sodalite
kakov Replies: 14 Views: 45929	Forum: The histories behind mineral specimens Posted: Aug 23, 2017 03:23 Subject: Re: Historical Information About Sodalite - Ilímaussaq
kakov Replies: 14 Views: 45929	Hi again, the type locality and the original (scientific) discovery of sodalite is exciting, although this is a topic of which you will find very little information on the “standard” info sources of I ...
Topic: Historical Information About Sodalite
kakov Replies: 14 Views: 45929	Forum: The histories behind mineral specimens Posted: Aug 22, 2017 03:39 Subject: Re: Historical Information About Sodalite
kakov Replies: 14 Views: 45929	Hi, it might be peripherical info only in the given context, but from the point of view of history of mineralogy there are many juicy details. The first scientific description of the mineral was not m ...
Topic: Natural History Museum of Denmark - Geological Museum, Copenhagen
kakov Replies: 16 Views: 55776	Forum: Natural History Museum of Denmark - Geological Museum, Copenhagen Posted: Jul 28, 2017 14:40 Subject: Re: Natural History Museum of Denmark - Geological Museum, Copenhagen
kakov Replies: 16 Views: 55776	Thank you so much for sharing these images! This museum was almost “my second home”, especially in the very first years when I moved to Copenhagen with my father, still as kid, in 1986. I passed by pr ...
Topic: The oldest rocks
kakov Replies: 11 Views: 22246	Forum: Off-Topic and Introductions Posted: Jun 17, 2017 13:12 Subject: Re: The oldest rocks
kakov Replies: 11 Views: 22246	Dear FMFers, I understand meteorites to be a kind of taboo subject in our forum, but I interpret this trend as mainly for avoiding the tedious discussions of "is this a meteorite?". The be ...