Past Events of the Mineralogists Project Group

Monday, 8th December 2014, 4 pm

Tell me, mineral, how old are you actually?

The Mineralogists Project Group will be meeting for the last time this year on Monday 8 December at 4pm for a mineral-packed Christmas party. The young people are already acquainted with a whole host of minerals, but this time they’re going to find out just how old these might actually be, and how you can tell. Parents are also warmly invited!

Most of the minerals that we know can be immediately distinguished by their colour or form. But minerals all have different ages. That’s why members of the Mineralogists Project Group will look at what it is that tells you how old minerals are, and how you can work it out. Some minerals have interesting characteristics and these can give us exciting clues as to how they were formed. It’s almost like reading a diary and finding out how far the mineral has come. Anyone who wants to know what the signs are of a mineral’s age will enjoy this journey into the past with the Mineralogists Project Group. At the end of the session we’ll be having Christmas biscuits and alcohol-free punch at the "Research Expedtition".

Monday, 10th November 2014, 4 pm

The seven crystal systems

At our next meeting we will be in the “German Mineralogical Collection” in the Krügerhaus putting the seven crystal systems under the magnifying glass. Participants will get to know the amazing variety of crystal formations and learn how to classify them. A crystal is a solid object in which the atoms are regularly arranged according to a very specific pattern. The numerous different forms are classified under seven crystal systems. “The different crystal systems are an important element of crystallography that you ignore at your peril when you are looking for crystals,” says Jan Marc Wargenau, leader of the “Mineralogen AG” group at terra mineralia, TU Bergakademie Freiberg’s geoscientific collection. “The variety of different crystal forms is an exciting world you can completely immerse yourself in.” Young people will learn this session what the different forms are and which ones are new to them. They will also try classifying the crystals themselves and find out why that is actually often quite easy! If you have ever wondered where these different forms come from and want to know more, or have questions, then don’t miss next Monday’s “Mineralogen AG”.

„Mineralogen AG“ meets at the terra mineralia ticket office in Schloss Freudenstein. For more information, please contact the Information Desk on 03731 394654, or by email at Tickets cost €2 per person.

Monday, 13th October 2014, 4 pm

Visit to the exhibition: “Foraminifera: Small master builders in the ocean”

On Monday, 13th October at 4 pm, the Mineralogists’ Club - the youth club of the terra mineralia - will meet to view the current terra mineralia special exhibition “Foraminifera: Little master builders of the ocean”.

Most of us know hardly anything or absolutely nothing about them, but forams are very important in each and every one of our lives because they influence the world climate, they help us in our search for crude oil, they are the largest producers of calcium on our planet, they can form minerals, entire mountain ranges consist of them and they also occur in the Egyptian pyramids.

But these master builders of the ocean are tiny! So tiny that one can barely see them with the naked eye. And they are beautiful, as Jan Marc Wargenau, head of the Mineralogists’ Club explains: “Their appearance alone makes forams fascinating and unique. We want to offer the children insight into the unbelievable world of the forams and the special exhibition is just the right place to do so.” The children will enjoy an exciting tour through the exhibition, where they will be inspired by the world of the forams at various different stations.

The Mineralogists’ Club meets at the terra mineralia cash desk at Freudenstein Castle. Further information is available at the Info Desk on 03731 394654 or at

Saturday, 20th September 2014


As a follow-up to our visit to the Lorenz Gegentrum Mine Dump in Halsbrücke last year, we would like to look for agates in Schlottwitz. 

Your child needs the following items in order to search for minerals:

  • Refreshments, and in particular, a lot to drink
  • Good shoes (hiking shoes and if possible wellingtons)
  • Old long trousers
  • A small hammer and protective goggles
  • A hard hat or cycling helmet
  • Whatever packaging material is available, e.g. old newspaper or cellulose packaging
  • Note pad and pencil for labelling their finds
  • Insect repellent and sun protection
  • A sun hat or cap
  • Towel 

Without these items, your child will not be allowed to participate in the excursion. 

We request that you also participate in the excursion in order to support and supervise your child in his/her search. Please inform your child that he/she must precisely follow the instructions of the supervisors. 

The number of participants is limited to 25 children with their parents. Please register your child at the terra mineralia Info Desk (03731 394654 or by Wednesday, 17 September 2014. 

Excursion details:


10:30 am                        

End: approx. 2 pm, later if necessary
Address:          Achat Schlottwitz, Family Martina Thomas, Cunnersdorfer Str. 8, 01768 Schlottwitz

4,00 Euros per person

Monday, 15th September 2014, 4 pm

Freiberg Gneiss – from formation to use

On 15th September at 4 pm, the members of Mineralogen AG, the youth club of terra mineralia, will be looking at an indigenous stone. This stone is the famous Freiberg gneiss. The interested young people (11 years old and upwards) will find out how this rock is formed, where exactly it occurs and where it is used.

“You don’t always need to travel very far to locate great rocks and minerals, you can find a lot of interesting stones here in this region and the Freiberg gneiss is a great example”, Jan Marc Wargenau, director of Mineralogen AG, explains. “I would like to show prospective mineralogists just what is waiting to be discovered all around them in everyday life, and the Freiberg gneiss has a fascinating history precisely because it can be found wherever you go in Freiberg, even in houses and in the old town wall”. The young people will discover the special properties of gneiss and where to find it all over the town in Freiberg.

On Saturday 20th September, they will also have the opportunity to learn more about a very well-known and indigenous mineral, as this year’s excursion will head off to Schlottwitz in Dresden, to one of the most famous sites for finding agates in the whole of Saxony. The excursion will also include the members of mineralinos. The amateur collectors can look forward to some wonderful finds and an eventful field trip. 

Mineralogen AG meets at the reception desk of terra mineralia at Schloss Freudenstein. For further details and for information on the excursion, please contact the information desk on 03731 394654 or email, open Monday to Thursday (10 am – 3.30 pm).

Monday, 14th July 2014, 4 pm

What did I find? Identify your finds from the excursion

This meeting is dedicated to the finds from the excursion. But it’s not just about what mineral you have found! It’s also about how to incorporate it into your collection correctly. Here, exact identification and labelling of the mineral you have discovered are very important. The participants from the Mineralogists’ Club will also compare their finds with one another and perhaps even swop with each other. “This gives children an initial idea about what the collecting of minerals involves,” says Jan Marc Wargenau, the supervisor of the Mineralogists’ Club. “When all is said and done, even the biggest mineral collectors do nothing more than collect and swop, and it is exactly this passion that I want to pass on to the children.” At the moment, we aren’t going to reveal what minerals are involved. If you also love minerals, then come along and spend an afternoon with the Mineralogists’ Club at terra mineralia.

The Mineralogists’ Club meets at the terra mineralia cash desk at Freudenstein Castle. For further information, contact the Info Desk: 03731 394654 or

Monday, 16th June 2014, 4 pm

What is galena?

Lead glance is the name that miners use for the lead mineral galena, and the “father” of mineralogy, Abraham Gottlob Werner, also used this term to describe the mineral galena. But exactly what has lead glance to do with galena? Perhaps it has something to do with lead, or one wouldn’t call it that. At this meeting, the members of the Mineralogists’ Club will learn about the history of lead glance and about the special significance it has for Freiberg. They will find out about the other famous places where it has been found in Germany. The young researchers will also make notes of their new-found knowledge by drawing up a mineral profile. If you also want to find out what makes lead glance so special and where it can be found in Germany, we look forward to seeing you at the Mineralogists’ Club.

The young scientists of the Mineralogists’ Club meet at the terra mineralia cash desk at Freudenstein Castle. For further information, please contact the Info Desk on 03731 394654 or

Monday, 12th May 2014, 4 pm

Our earth: From crust to core

This time, a highly interesting topic awaits the young scientists of the Mineralogists’ Club. What actually goes on underneath the earth that we live on? At this meeting, the participants will “dig their way through” from the earth’s crust to its core. In the process, they will discover exciting facts such as the special properties of the individual layers that exist under our earth and why they are important for life on earth.

The young mineralogists will embark on an exciting journey deep into the earth: On the way, they will learn how the continents move, how volcanoes erupt and what the earth is composed of. Many of these gripping issues are still not really understood, but they are very important for survival on earth. The participants will discover what is really going on underneath their feet and which fascinating processes take place every day without our noticing them.

The young scientists of the Mineralogists’ Club meet at the terra mineralia cash desk at Freudenstein Castle. For further information, please contact the Info Desk on 03731 394654 or

Monday, 14th April 2014, 4 pm

Crude Oil – black gold

On Monday 14 April 2014 at 4 pm, the Mineralogists’ Club, a working group for school pupils, will once again meet at Freudenstein Castle for a companionable afternoon. The subject of the get-together is “Crude oil – black gold”.

Everybody knows what crude oil is, but why is it sometimes called “black gold?” The members of the Mineralogists’ Club will investigate this interesting question. During the get together, you will find out how crude oil is formed, where in the world it occurs and how one gets it out of the oil wells deep under the earth’s surface. But there are also many dangers involved, as was evident a few years ago in the Gulf of Mexico, after the accident on the oil rig “Deepwater Horizon”. The pupils will learn what materials crude oil contains and what conditions are necessary for its formation. The everyday uses of crude oil will also be explained. Pupils from the age of 12 are welcome to join the members of terra mineralia’s recently founded Mineralogists’ Club.

The Mineralogists’ Club meets at the cash desk of terra mineralia at Freudenstein Castle. For more information, please contact the Information Desk on 03731 394654 or

Monday, 10th March 2014, 4 pm

Who the heck was Strunz?
(“Wernerbau”, 14 Brennhausgasse)

Information for parents and journalists:

Karl Hugo Strunz was a famous mineralogist who brought order into the classification of thousands of different minerals. We visit the “Mineralogical Collection” of the TU Mining Academy in Freiberg so that the young mineralogists can have a look at this historical collection. Here, they will also learn the difference between this remarkable collection and the terra mineralia.

Invitation for children:

We have already visited two exhibitions with the Mineralogists Project Group - the terra mineralia and the German Mineralogical Collection at Krügerhaus. But where do the differences between these collections and the TU Mining Academy, Freiberg’s world famous Mineralogical Collection, lie? Accompanied by their guide, Jan Marc Wargenau, the children will set off in search of a certain Mr. Strunz, in order to clear up this question. This Mr. Strunz apparently has something to do with it all, because three minerals were named after him and he is supposed to have discovered 14 new minerals himself. There are interesting differences between the three exhibitions and of course, there are also new, exciting minerals to admire. If you feel like spending an afternoon with the Mineralogists Club in the footsteps of the famous Mr. Strunz, we would be delighted to welcome you to the working group of young researchers and mineral collectors at terra mineralia.

The children of the Mineralogists Project Group meet at the terra mineralia cash desk at Freudenstein Castle. For further information, please contact the Info Desk on 03731 394654 or via email

Monday, 10th February 2014, 4 pm

The wonderful world of the agate

There are many agates in the “German Mineralogical Collection” at Krügerhaus. Here the children can discover the wonderful world of agates for themselves. Agate can have fascinating colours and shapes. In the Mineralogists’ Club meeting, the children find out where most of the agate comes from and how it is formed.

Monday, 13th January 2014, 4 pm

A view into nothingness – the scanning electron microscope

Most children have looked through, and perhaps even studied some minerals through a microscope some stage. But what do you do if the minerals are too small for a normal microscope? You use a scanning electron-microscope! The young members of the Mineralogists’ Club learn all the astounding things one can do with this amazing instrument.