以下是中文说明
作为湖南的省会城市，在这个藏点发布的时候，居然只有一个活跃的传统藏点。长沙拥有超过700万人口，我希望通过这个地质藏点能够吸引更多的藏友，并最终会有更多的藏点在长沙出现。
关于这个地方
坐标的位置将带你到天心公园，虽然面积不大，但这是长沙的一个著名公园。因为天心阁而命名。
天心阁位于湖南省会长沙城市的中心，是以天心古阁和古城墙为主要景点的历史名胜，自明代以来，天心阁被视为古城长沙的标志，素有“潇湘古阁，秦汉名城”之美誉。 雄踞于古城墙垣之上的天心阁，始建年代不详，现存史料中最早有记载的是明万历41年（公元1613年）善化县知县唐源的《分地方申详》一文和明崇祯年间俞仪的《天心阁眺望》一诗，距今近500年的历史。 天心阁历朝历代为官民所重，不同时期均有修茸。明末时阁楼为一层，清乾隆年间修建为两层，嘉庆年间加建为三层，至民国初期（1924年），当局将年久失修的天心阁全面修缮加固，并在阁楼的左右两侧仿照北京文澜阁的规制，增建二轩（南轩和北轩），气势尤显壮观，后毁于1938年抗日战争时期的“文夕大火”。现天心阁为1983年在原址重建，仿明清建筑风格，主阁楼三层，高14.6米；南、北各有两个附阁（南屏、北拱）高10米；主阁和附阁之间以廊连接，其势雄伟壮观、气度恢弘。
地质材料
在坐标位置，你会发现一个石质建筑，这个建筑被称为崇烈门。如果你是从山下走来，在左侧，你会找到一个中英文的介绍。介绍此门由麻石，也就是花岗岩所建。
花岗岩属于酸性（SiO2>66%）岩浆岩中的侵入岩，这是此类中最常见的一种岩石，多为浅肉红色、浅灰色、灰白色等。中粗粒、细粒结构，块状构造。也有一些为斑杂构造、球状构造、似片麻状构造等。主要矿物为石英、钾长石和酸性斜长石，次要矿物则为黑云母、角闪石，有时还有少量辉石。副矿物种类很多，常见的有磁铁矿，榍石，锆石、磷灰石、电气石，萤石等。石英含量是各种岩浆岩中最多的，其含量可从20—50%，少数可达50—60%。花岗岩的语源是拉丁文的granum，意思是谷粒或颗粒。因为花岗岩是深成岩，常能形成发育良好、肉眼可辨的矿物颗粒，因而得名。花岗岩不易风化，颜色美观，外观色泽可保持百年以上，由于其硬度高、耐磨损，除了用作高级建筑装饰工程、大厅地面外，还是露天雕刻的首选之材。
富含石英和长石的粗粒或中粒侵入岩，是地壳中最常见的深成岩，由岩浆在地壳深处冷却而成。由于可作铺路石块和建筑石料，开采花岗岩一度是一门重要的行业。花岗岩可以呈岩脉或岩床产出，更有代表性的是规模变化极大的不规则岩体。主要组分是长石，斜长石和碱性长石一般都很丰富，二者的相对丰度成了花岗岩的分类基础。大多数花岗岩中，这里两类长石的比值都小于1/2。属于这一类的有美国东部、中部、和西南部，英格兰西南部，波罗的海地盾区，法国西部和中部，西班牙以及其他许多地区的大多数花岗岩。斜长石大大地超过碱性长石的花岗岩类，在美国西部一些地区常见。碱性长石含量大大超过斜长石的花岗岩产于新英格兰，英国和挪威奥斯陆地区的许多地点，但都是较小的岩体，在尼日利亚的北部发育十分广泛。岩石中石英含量少于20%的不叫花岗岩，暗色矿物（铁镁质矿物）的最大含量大约为20%（按体积）。花岗岩中较少的主要矿物是白云母、黑云母、角闪石、辉石或罕见的铁橄榄石。黑云母可以产于任何类型的花岗岩中，而且通常都有，尽管有时含量很少。含钠的角闪石和辉石（钠闪石、钠铁闪石、霓石）是碱性花岗岩特有的。如果两类长石中没有一类含量大大超过另一类，那么角闪石、辉石都不大可能是主要矿物；暗色矿物通常是黑云母或白云母，或是二者兼有。
花岗岩还可以根据所含矿物种类进一步命名，常见的有以下几种
1. 白云母花岗岩
2. 黑云母花岗岩
3. 角闪花岗岩
4. 辉石花岗岩
5. 二云母花岗岩
在进一步介绍这四种花岗岩之前，先要对上述提到的几种地质材料进行介绍。
白云母，图片来自wikipedia
B黑云母，图片来自wikipedia
角闪石，图片来自wikipedia
辉石，图片来自wikipedia
如暗色矿物主要是黑云母，可称为黑云母花岗岩，这是常见的一种花岗岩。如为黑云母和白云母，其含量接近相等，可称为二云母花岗岩，如果暗色矿物以角闪石为主，则称为角闪花岗岩，如果暗色矿物以辉石为主，则称为辉石花岗岩，几乎不含暗色矿物的则可称为白岗岩。
从哪里来
从介绍你应该可以看到，在这种石头被称为麻石，从字面意义讲，麻石就是指有麻点的石头，这是中文对于花岗岩的俗称，非常神奇的是，这个含义和拉丁文的来源完全相同。
从长沙往北50公里左右，有一个城市叫做汨罗。那里是麻石的一个著名产地，也许，制作崇烈门的麻石就是来源于这里。另外汨罗也是屈原投江的地方，他是谁，以及他的影响，我想，所有能看懂中文的同胞都是知道的。这里也不多说了。
建筑结构：牌坊
崇烈门的这种建筑结构被称为牌坊。
牌坊这个词来源于中国古代行政管理区划的称呼。唐代，我国城市都采用里坊制，城内被纵横交错的棋盘式道路划分成若干块方形居民区，这些居民区，唐代称为"坊"。坊是居民居住区的基本单位，"坊"与"坊"之间有墙相隔，坊墙中央设有门，以便通行，称为坊门。后来因为门没有太大的作用，所以就只剩下这种形式，于是百姓逐渐地称这种坊门为牌坊。
是古代社会为表彰功勋、科第、德政以及忠孝节义所立的建筑物。也有一些宫观寺庙以牌坊作为山门的，还有的是用来标明地名的。又名牌楼，为门洞式纪念性建筑物，宣扬封建礼教，标榜功德。牌坊也是祠堂的附属建筑物，昭示家族先人的高尚美德和丰功伟绩，兼有祭祖的功能。 牌坊就其建造意图来说，可分为四类：一是功德牌坊，为某人记功记德。如山东省桓台县新城镇“四世宫保”牌坊，是明朝万历皇帝为当时新城人兵部尚书王象乾所建。王象乾文韬武略，威震九边，加功晋爵太子太保，追赠曾祖、祖父、父亲太子太保、兵部尚书之衔，故额题“四世宫保”。 二是贞节道德牌坊，多表彰节妇烈女，在安徽歙县有许多这类牌坊。云南楚雄黑井镇有一座节孝总坊，是清朝末年由慈禧太后下令建造的，表彰本地的节烈妇女。三类是标志科举成就的，多为家族牌坊，为光宗耀祖之用。四类为标志坊，多立于村镇入口与街上，作为空间段落的分隔之用
建造牌坊的材料可以有多种，除了现代使用的钢筋水泥外，古代通常用木材或石头来建造牌坊，石质的牌坊有更多的精神或宗教含义，从结构上看繁简不一，有的极简单，只有一间二柱，无明楼；复杂的有五间六柱十一楼者。由于本身的结构特点，有的虽为三间四柱式，却只有花板而无明楼。石坊的明楼比较复杂，浮雕镂刻亦极有特色。如果石质坚细，不仅浮雕生动，而且其精细的图案历经数百年也不泯没。
因为花岗岩的优秀物理特性，它被广泛地应用于石牌坊中。我们相信麻石石牌坊能屹立百年、甚至千年，它可以长久地向世人宣告这石牌坊背后的含义，希望后世可以永远记住它所承载的情感。
中山陵前的石牌坊photo from wikipedia
你需要……
为了证明你找真正找到了这个藏点，你需要回答以下的问题，并在log found后的一周内，通过geocaching.com网站内的消息系统将答案发给藏家。
Q1: 建造崇烈门的材料是什么？
A. 白云母花岗岩
B. 黑云母花岗岩
C. 角闪花岗岩
D. 辉石花岗岩
E. 二云母花岗岩
Q2: 为了证明你真的到过这里，你会看到门的上方有一个提字，这个提字是谁写的？
Q3: 上文提到，在现场你能找到崇烈门的中英文介绍，英文介绍标题的最后一个字是什么？
Q4: 月球上有花岗岩吗？为什么？
English below
Changsha is the capital city of Hunan Provice. I was surprised to find that there is only one traditional cache active in a city with more than 7 million population. I hope this earth cache could attract more geocachers and caches in the future.
About this palace
The listed coordinates will lead you to Tianxin Park, which is a small but famous park in Changsha, Hunan Province. The park was named after the Tianxin Pavilion.
Tianxin Pavilion (simplified Chinese: 天心阁; traditional Chinese: 天心閣; pinyin: Tiānxīn Gé) is an ancient Chinese pavilion located on the ancient city wall of Changsha, Hunan, China. The pavilion was first established in the 15th century, at the dawn of Ming dynasty (1368–1644), but because of war and natural disasters has been restored and renovated numerous times since then. The present version was completed in 1984. Tianxin Pavilion is composed of three pavilions, the three–stories main pavilion and the two–stories auxiliary pavilions. The two sides are connected with a long corridor. Alongside the Yueyang Tower, Pavilion of Prince Teng, Yellow Crane Tower, Stork Tower, Penglai Pavilion, Daguan Pavilion, Yuejiang Tower, Xi'an Bell and Drum Tower and Tianyi Pavilion, it is one of the "Ten Famous Chinese Historical and Cultural Towers and Pavilions"
The material
At the coordinates place, you will find a stone structure. It is called Chonglie gate. If you are standing on the lower side, on your left side you will find an introduction in Chinese and English. The gate was made with granite.
Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy. The word "granite" comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a holocrystalline rock. Strictly speaking, granite is an igneous rock with between 20% and 60% quartz by volume, and at least 35% of the total feldspar consisting of alkali feldspar, although commonly the term "granite" is used to refer to a wider range of coarse grained igneous rocks containing quartz and feldspar.
The granite could be divided into following types according to the differing amounts of muscovite, biotite, and hornblende-type amphiboles.
1. muscovite granite
2. biotite granite
3. hornblende granite
4. pyroxene granite
5. two-mica granite
Before we explain the above 4 types of granite, we must introduce the following minerals.
muscovite photo from wikipedia
Biotite photo from wikipedia
hornblende photo from wikipedia
Pyroxene，photo from wikipedia
Muscovite granite means the granite consists a lot of muscovite. Biotite granite means consists a lot of biotite. If the composition ratio of the muscovite and the biotite is similar then it is called two-mica granite. I think you could figure out what is hornblende granite and pyroxene granite.
Where is it from?
In Chinese, the stone built this gate was called "Ma Shi （Chinese: 麻石）", which means stone with spots. I think it is very similar to the granite's Latin origin.
Around 50KM north of Changsha, there is a small city call Miluo, which is a well-know Ma Shi production site. Maybe the stone was transported from there. By the way, Miluo is also famous for a Chinese poet Qu Yuan, who gave us the Dragon Boat Festival. More about him: https://en.wikipedia.org/wiki/Qu_Yuan
The architecture style: Paifang
The architecture style of Chonglie Gate is called "Panfang" in Chinese.
The word Paifang (Chinese: 牌坊; pinyin: páifāng) was originally a collective term for the top two levels of administrative division and subdivisions of ancient Chinese cities.
As an accessorial architecture, Paifang firstly serves as a gateway and decoration of the main building. Meanwhile, traditional Chinese archways generally carried inscriptions to propagate certain moral principles or to extol government achievements. In ancient China, for example, many widowed women, fettered by the feudal ethical code, refrained from remarriage just in the hope to have "archway of chastity".
The material building Paifang are varied. It could be wood or stone. The stone Paifang built mainly have spiritual, religious or other special meanings rather than decoration purpose. It consists of plain white stone pillars and beams, with neither roof tiles nor any colored decoration.
Because of the excellent physical features of the granite, it has been widely used for the stone Paifang. Chinese believe that the granite stone Paifang could stand for hundreds or evens thousands years, the spiritual meaning lies behind the Paifang would also stand that long as the beacon to inspire their descendants for years.
The Paifang at Sun Yat-sen Mausoleum photo from wikipedia
You need...
To claim this cache you need to send the answer of the following questions. You need to send the answer to the owner by the geocaching.com message system within a week of your log.
Q1: What exact material built the gate?
A. muscovite granite?
B. biotite granite?
C. hornblende granite?
D. pyroxene granite
E. two-mica granite?
Q2: To prove you have been there, You will find the name of the gate at to top center of the gate. Who inscribed that 3 Chinese Characters? Go up hill you will find another horizontal tablet inscribed by him with a answer nearby.
Q3: In the listing, I mentioned that you will find a introduction of Chonglie Gate both in Chinese and English. What's the last word of the English title?
Q4: Is there any granite on the moon? Why?