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CMLC Newsletter Nov,Dec 2019

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CMLC Newsletter Nov,Dec 2019 1 NOVEMBER & DECEMBER 2019 Now in its 15th year No Stone Unturned Merry Christmas & Happy New Year Mediterranean Sea Camping styles KEN 1 Our club offers tuition in the lapidary arts of cutting and polishing cabochons, faceting stones and crafting silver jewellery. Sign up for these courses at the front counter for 2020!. Above, Sylvia with her latest silver class Above: Robbie, finding sapphires ladies. Read his report inside. Left, Mike hands Amanda her certificate for cabbing. 2 CONTACT INFORMATION: WE WISH TO THANK THE FEDERAL Phone: 0450 185 250 MEMBER FOR LEICHHARDT, HON. Email: [email protected] WARREN ENSTCH, FOR FACILITATING THE Postal Address: PO Box 389, Westcourt. 4870. NQ PRINTING OF THIS MAGAZINE. 129 Mulgrave Road (in the Youth Centre Grounds) MANAGEMENT COMMITTEE MEMBERS: CLUB HOURS: President: Michael Hardcastle Monday 4:00pm to 9:30 pm Vice-president: Mike Rashleigh Wednesday *8:30am to 12:30 Secretary: Jan Hannam *1:00pm to 4:00pm Treasurer: Joe Venables Saturday *9:00am to 1:00 Assistant Secretary: Allan Rose *12:00pm to 4:00pm Assistant Treasurer: Richie Williams Workroom fees are $4 per session or part Extra Members MC: Tammi Saal thereof and must be paid before session begins. The Club provides tuition in cabbing, faceting, OTHER PERSONNEL: silver-smithing and lost wax casting Purchasing Officer: Jan Saal Specimen Curator: David Croft Note: The Club is closed for gazetted holidays Specimen Testers: David Croft, Vic Lahtinen, only and open on other club days Trevor Hannam GENERAL MEETINGS: Cabochon Advisors: Jodi Sawyer Faceting Instructors: Jim Lidstone, Joe Ferk, General meetings are held on the 1st Saturday of Trevor Hannam each month. When this is a public holiday, the Silver Instructors: Sylvia Rose, Jan Saal meeting is deferred until the following Saturday. Machinery Curators: volunteers needed Note: Your Attendance at General Meetings Gem Testing: Vic Lahtinen, Trevor Hannam ensures that your voice will be heard when it Librarian: David Croft comes to making decisions concerning the Facebook Admin: Tammi Saal, Peggy Walker running of the club. Webpage Admin: Richie Williams, John Heenan QLACCA Delegate: Bill Reece CLUB PURCHASING POLICY: Youth Centre Rep: Bill Reece If you wish to purchase something on behalf of the Field Trip Advisors: Allan Gale, Craig Walker, club, please notify the purchasing officer, Jan John Heenan, Leigh Twine Gem Festival: Trevor Hannam, Michael PLEASE CONSIDER CONTRIBUTING MATERIAL Hardcastle, Allan Gale, for “No Stone Unturned”. Tammi Saal, Mike Rashleigh Auditor: Carey Accountancy Magazine Editor and Publisher: Jeanne Mora Safety Officers positions vacant The Editor reserves the right to choose and edit all Club Banking details for anyone wishing to pay material featured in this magazine. membership fees electronically: Although all care is taken to ensure the Bendigo bank Acc: 165026436 BSB: 633 000 accuracy of the material herein, the Editor Gem Festival and Membership does not accept responsibility for any inaccuracies which may inadvertently occur. 3 PRESIDENT’S REPORT: Hello Everybody Well what beautiful weather we have been experiencing in the Cairns region. We have only just started using the air conditioning units, due to the mild temperatures this year. Welcome to our new members. It’s great to see you using the facilities and having fun learning the skills. Our Christmas Party Feast is on December 7th after the general meeting which will start one hour earlier at 11:00am. All members and friends are welcome. Could everybody attending please fill in the list on the notice board. Thank you! It will assist Betty in purchasing the right quantity of ham and chicken for our merry Christmas gathering. John Heenan has been appointed as an additional Webpage Administrator. Thank you so much, John, for volunteering for this technical position. John has been busy working behind the scenes developing a new Webpage. John is encouraging all members to get involved, register and participate in adding to and developing the new Webpage. John advises that the easiest way to get to the club webpage is to google “cairns lapidary” and choose the link in large letters that says “Cairns Mineral and Lapidary Club”. Thank you to Jean McGuigan and family who have kindly donated rock specimens that have enhanced the club’s display. Jean also donated a lapidary work station and some rocks which are available for members to purchase. This donation was much appreciated. The club has also purchased a second-hand flat lap machine . Please check with instructors before using the flat lap. Thank you to all our instructors who have been busy sharing their knowledge. I’m sure it is much appreciated. Betty has agreed to monitor the kitchen again and to purchase supplies. Thank you Betty for volunteering for this position. A big thank you to the Management Committee who work as a great team volunteering their time and knowledge to assist in the efficient operation of the club. Remember there are many mem- bers working in the background, ordering stock, purchasing equipment, purchasing equipment, maintain- ing machinery, making homemade cakes to share at smoko, Webpage. Facebook page, compiling , emp- tying bins, vacuum cleaning etc etc. The more members who volunteer, will add up to making our club a stronger organisation. Thank you everybody, especially Jeanne the editor of “No Stone Unturned” without you we would not be reading this article. Just a reminder, your club membership expires on 31th December and due to insurance conditions, you will not be permitted to use the workrooms if your membership has expired. I wish you all a safe and merry Christmas and very happy New Year. Michael 4 DATES TO REMEMBER AROUND NOVEMBER THE 2 Club General Meeting 12:00 noon CLUB 2 QLACCA Christmas dinner Our thoughts are with all members and their 2 &3 Bundaberg Gemfair held at the Multi families who are unwell. Purpose Centre, Bundaberg East Many Happy Returns to all members celebrating a 2&3 Illawarra Lapidary Club Jewellery Gems birthday in November: and minerals Festival held at the Ribbon A warm welcome to all our new club members. wood Centre. Adam Brown, Daimen Hampson, Jacky Arnott, Jedess 2&3 Geelong Gem and Mineral Gem Show Hudson, Stacey Carseldine, Walter Sneesby held at Geelong West Town Hall New members, please keep in mind that our club sells most lapidary requirements at very competitive prices. 10 Sunday Slog 9:00 to 12:00 Ask at the counter. 16 Management Committee Meeting 23 Trevor’s Demonstration of Electroform ing Christmas Party DECEMBER 1 Redcliffe gem Show Venue to be When: Saturday 7th Dec announced Where Club Rooms 7 CLUB CHRISTMAS PARTY following the What you need to do:- General Meeting which starts at 11:00 this 1. Bring a plate of Christmas time goodies 12 Club closes after this session for the 2. Sign up on the notice board & Christmas recess. say how many of you are coming 25 A Very Happy & Safe Christmas to and what food you are bringing Everyone. 3. BYO booze if you want to (no glass please… Youth Centre directive) 4. Get into your best party gear 5. Put on your best smile and party mood 6. Prepare to party with our great fellow members. Remember we reopen on 15th January 2020 5 Some different tutorials for you to try 6 Sedimentary Rocks Most of he rocks on the surface of the earth are sedimentary Sedimentary rocks are named as such because they were once sediment. Sediment is a naturally occurring material that is broken down by the processes of weathering and erosion and is subsequently naturally transported . Sedimentary rocks form through the deposition of material at the Earth’s surface and within bodies of water. There are 7 main groups of sedimentary rocks. • clastic sedimentary rocks — small rock A conglomerate — a rock made from cemented gravel. Image via fragments (many are silicates) that were transported Earth Physics Teaching. and deposited by fluids (water, bed flows). These rocks are further classified by the size and composition of the clastic crystals included in the sedimentary rocks (most often quartz, feldspar, mica and clay). • conglomerates (and breccias) — conglomerates are predominantly composed of rounded gravel, while breccias are composed of angular (sharper) gravel. • sandstones — as the name says, it’s a rock made from many-sand-sized minerals and rock grains. The most dominant mineral in sandstone is quartz because it is the most common mineral in the Earth’s surface crust. • mudrocks — again, the name says it all — they’re rocks made from solidified mud. They typically contain very fine particles and are transported as suspended particles by turbulent flow in water or air, depositing once the flow settles. • biochemical rocks — you’ll probably be surprised to find out that most limestone on the face of the Earth comes from biological sources. In other words, most limestone you see today comes from the skeletons of organisms such as corals, mollusks, and foraminifera. Coal is another example of biochemical rock. • chemical rocks — these rocks include Below: An old, red sandstone. Image via Ian Hopkinson. gypsum and salt (halite) and are formed mostly through water evaporation There are also other types of specific sedimentary rocks — for example, the ones formed in hot springs. Most of the solid surface of our planet (roughly 70%) is represented by sedimentary rocks, but if you go deep enough beneath the Earth’s surface, there are plenty of igneous and metamorphic rocks to be found. As mentioned with biochemical rocks, fossils can become rocks in time. You can actually have entire mountains made up from reefs as you can see in the diagram on the next page. 7 This entire mountain in Romania was formed based on a coral reef.
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