All posts by idb

ML308 Fluorescent minerals collection (Shortwave)

名稱   熒光礦物藏品(短波)Name   Fluorescent minerals collection (Shortwave)化學公式   –Chemical Formula   –莫氏硬度   –Mohs scale of Hardness   –描述   當它吸收外界能量後它會發出螢光色。Description   When it absorbs external energy, it emits a fluorescent color小挑戰   現在發現多少種? 全世界已經發現的礦物有5000多種 但具有螢光性的僅200種左右Challenge   How many kinds are found now?  There are more than 5,000 minerals found in the world  But only about 200 kinds are fluorescent Reference https://www.google.com.hk/amp/s/kknews.cc/science/r8jxkmo.amp by 4B12 Lam Cheuk Ying Opal on 2 April 2021

Read More »

ML307 Green Calcite

Code:ML307 名稱 綠色方解石Name Green Calcite化學公式 CaCO3Chemical formula CaCO3莫氏硬度 3Mohs scale of Hardness 3描述 綠方解石屬於碳酸鹽的礦物類別,是通過沉降形成的。石頭中的綠色是結晶過程中捕獲的綠泥石,具有舒緩而美麗的淺綠色陰影,並且石頭是不透明的Description Green-Calcite belongs to the mineral class of carbonate and is formed through sedimentation. The color green in the stone comes from the chlorite that got trapped during crystallization.It has a soothing and beautiful light green shade, and the stone is opaque小挑戰 綠色方解石的日常用途是什麼? 它用作幫助釋放壓力和鬆弛的工具Challenge What is the daily uses of green calcite? It is used as a tool to help release stress and relaxation   Reference: https://meanings.crystalsandjewelry.com/green-calcite/ https://zh.m.wikipedia.org/wiki/%E6%96%B9%E8%A7%A3%E7%9F%B3 By 4B Kwok Siu…

Read More »

ML306 Tangerine Calcite

Code: ML306 名稱   橘色方解石Name   Tangerine Calcite化學公式   CaCO3Chemical Formula   CaCO3莫氏硬度   3Mohs scale of Hardness   3描述 橘子方解石是一種橙色的碳酸鈣礦物,是碳酸鈣最穩定的多晶型物。Description Tangerine Calcite is a orange carbonate mineral and is the most stable polymorph of calcium carbonate.小挑戰 你在哪裡可以找到方解石。 (在石灰石,大理石等中)Challenge Where can you find calcite. (In limestone, marble etc) Reference 1.https://en.wikipedia.org/wiki/Fluorite 2. https://geology.com/minerals/calcite.shtml By 4B Ko Ka Chun (9) on 17/4

Read More »

ML305 Orange Calcite

Code:ML305 名稱 橙色方解石Name Orange Calcite化學公式 CaCO3Chemical Formula CaCO3莫氏硬度 3Mohs Scale of Hardness 3描述 它是無色,白色,黃色,紅色橙色,藍色,綠色,棕色,灰色。它的條紋是白色的。其卵裂表面為玻璃狀至珠光狀。  Description It is colorless, white, yellow, red orange, blue, green, brown, gray. Its streak is white. Its luster is vitreous to pearly on cleavage surface.  小挑戰 橙色方解石有什麼用?它用作雕刻對象和應用。  Challenge What is the use of orange calcite? It is used as carved objects and application. Reference https://en.wikipedia.org/wiki/Calcite By 4B Hung Man Ting Florence on 15 April 2021

Read More »

ML304 Blue Fluorite

Code: ML304 名稱   藍螢石Name   Blue Fluorite  化學公式   CaF2Chemical Formula   CaF2莫氏硬度   4Mohs scale of Hardness   4描述   晶體可能是無色的,但有時也可能是黃色,粉紅色,綠色,藍色或紫色,或上述顏色的一些其他混合物。  Description   Occasionally, the crystal may be colorless, yet sometimes it may also be yellow, pink, green, blue, or purple, or some other mixtures of the aforementioned colors.    小挑戰   為什麼藍螢石是有價值的?   螢石是全世界最有價值和最有價值的晶體之一。這是因為它具有美麗和光度。此外,它還具有玻璃狀和柔軟的外觀,通常外觀非常鮮豔。      Challenge   Why blue fluorite is valuable ?   Fluorite is amongst the most collectible and most valued crystals in the whole wide world. This is…

Read More »

ML303 Danburite

名稱   賽黃晶Name   Danburite化學公式   CaB2(SiO4)2Chemical Formula   CaB2(SiO4)2莫氏硬度   7-7.5Mohs scale of Hardness   7-7.5描述 賽黃晶是一種鈣硼矽酸鹽礦物,形成小棱柱狀晶體,類似於黃玉。它的顏色可以從白色到淺黃色,也可以是淺棕色。非常優質的丹布里石是無色的,通常是透明的。有時甚至可以發現它上面有一層無光澤的石英塗層。由於寶石的清晰度和彈性,珠寶商喜歡切割這種材料。  Description   Danburite is a calcium boron silicate mineral that forms in small prismatic crystals, similar to Topaz. Its color can range from a white to light yellow, and also a light shade of brown. Very high quality Danburite is colorless and usually transparent. Sometimes it can even be found with a druzy coating of Quartz over it. Jewelers love cutting this material due to the gems clarity and…

Read More »

ML302 Crocoite

名稱   鉻鉛礦Name   Crocoite化學公式   PbCrO4Chemical Formula   PbCrO4莫氏硬度   2.5–3Mohs scale of Hardness   2.5–3描述   鉻鉛礦通常為橙色、紅色和黃色,而在透射光下為橙紅色。它的條紋呈現淡黃橙色。鱷魚石的光澤為亞玻璃質、樹脂質和蠟狀。Description   Crocoite is usually in orange, red and yellow, while it is orange-red in transmitted light. The streak of it is yellowish orange. Luster of Crocoite is sub-vitreous, resinous and waxy.小挑戰   有什麼地方可以找到大量的鉻鉛礦? 在鄧達斯山的延伸礦山以及塔斯馬尼亞州鄧達斯的其他幾座礦山中被發現有大量的鉻鉛礦。Challenge   Are there any places where large amount of Crocoite could be found? Abundant masses of crocoite crystals have been found in the Extended Mine at Mount Dundas and a few other…

Read More »

ML301 Rutile

Code: ML301名稱金紅石NameRutile化學公式TiO2Chemical FormulaTiO2莫氏硬度6.0-6.5Mohs scale of Hardness6.0-6.5描述金紅石晶體質脆。通常略帶紅色,也有略帶黃色,藍色或紫色的晶體。金紅石具有平行於柱面的兩組不明顯的解理。主要見於砂礦中,亦見於火成岩及片麻岩等變質岩中。主要用於提取鈦和製造白色顏料。DescriptionNatural rutile may contain up to 10%iron and significant amounts ofniobium and tantalum. Rutile derivesits name from the Latin rutilus, red, inreference to the deep red colorobserved in some specimens whenviewed by transmitted light. Rutilewas first described in 1803 byAbraham Gottlob Werner.小挑戰我們在哪裡可以找到這石頭?中國,挪威,美國,俄羅斯等。ChallengeWhere can we find this stone?America, China, Russia, Norway…. Referencehttps://zh.wikipedia.org/wiki/金红石by Yuen Cheuk Sze on 18 Apr 2021

Read More »

ML300 Staurolite

Code:ML300 名稱 十字石Name   Staurolite化學公式   Fe2+2Al9O6(SiO4)4(O,OH)2Chemical Formula   Fe2+2Al9O6(SiO4)4(O,OH)2莫氏硬度   7-7.5Mohs scale of Hardness   7-7.5描述 十字石是島狀結構硅酸鹽礦物,它因有一個奇特的十字外形而得名。十字石又硬又脆,具有暗淡的光澤,一般為暗褐色。罕見的透明十字石可當作寶石。因為它的形狀,人們常用它製成裝飾品。Description Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5 and the chemical formula: Fe2+2Al9O6(SiO4)4(O,OH)2. Magnesium, zinc and manganese substitute in the iron site and trivalent iron can substitute for aluminium.小挑戰 你知道嗎? 十字石因形成短稜柱狀晶體,且通常會形成十字型的雙晶故得名,透明的十字石很稀有,一般來說不透明且十字型的十字石經常被用作護身符以及西方的宗教珠寶Challenge Do you know? Because of it’s Short prismatic crystals , and cross-shaped double crystals…

Read More »

ML299 Stichtite/ Serpentine

Code: ML299 名稱   碳鎂鉻礦/蛇紋石Name   Stichtite/ Serpentine化學公式   Mg6Cr2CO3(OH)16•4H2O/ (Mg, Fe)3Si2O5(OH)4Chemical Formula   Mg6Cr2CO3(OH)16•4H2O/ (Mg, Fe)3Si2O5(OH)4莫氏硬度   1.5 – 2Mohs scale of Hardness   1.5 – 2描述   它的顏色範圍從粉紅色到淡紫色到深紫色。 其光澤為蠟狀至樹脂狀,條紋為淡淡的淡紫色至白色,並且其透明性是透明Description   Its colour ranges from pink through lilac to a rich purple colour. Its Lustre is Waxy to resinous and its streak is Very pale lilac to white and the Diaphaneity of it is that it is transparent  小挑戰   我們在哪裡可以找到這塊石頭? 它在Zeehan的西海岸先驅博物館中展出。 唯一的輝石蛇紋石商業礦位于輝石山上。  Challenge   Where can we find this stone? It is exhibited…

Read More »